diff --git a/src/Wheniwork.php b/src/Wheniwork.php
index 00604ed..fcf0dbf 100644
--- a/src/Wheniwork.php
+++ b/src/Wheniwork.php
@@ -14,19 +14,24 @@
  */
 class Wheniwork {
 
-    const METHOD_GET = 'get';
-    const METHOD_POST = 'post';
-    const METHOD_PUT = 'put';
-    const METHOD_PATCH = 'patch';
+    /**
+     * HTTP Methods
+     */
+    const METHOD_GET    = 'get';
+    const METHOD_POST   = 'post';
+    const METHOD_PUT    = 'put';
+    const METHOD_PATCH  = 'patch';
     const METHOD_DELETE = 'delete';
 
+    const API_ENDPOINT = 'https://api.wheniwork.com/2';
+
     private $api_key;
     private $api_token;
-    private $api_endpoint = 'https://api.wheniwork.com/2';
-    private $verify_ssl   = false;
+    protected $verify_ssl = false;
 
     /**
      * Create a new instance
+     *
      * @param string $api_token The user WhenIWork API token
      */
     function __construct($api_token = null)
@@ -36,6 +41,7 @@ function __construct($api_token = null)
 
     /**
      * Set the user token for all requests
+     *
      * @param string $api_token The user WhenIWork API token
      */
     public function setToken($api_token) {
@@ -44,6 +50,7 @@ public function setToken($api_token) {
 
     /**
      * Get the user token to save for future requests
+     *
      * @return string The user WhenIWork API token
      */
     public function getToken() {
@@ -52,71 +59,77 @@ public function getToken() {
 
     /**
      * Get an object or list.
+     *
      * @param  string $method  The API method to call, e.g. '/users/'
      * @param  array  $params  An array of arguments to pass to the method.
      * @param  array  $headers Array of custom headers to be passed
      * @return array           Object of json decoded API response.
      */
-    public function get($method, $params = array(), $headers = array()) {
+    public function get($method, $params = [], $headers = []) {
         return $this->makeRequest($method, self::METHOD_GET, $params, $headers);
     }
 
     /**
      * Post to an endpoint.
+     *
      * @param  string $method  The API method to call, e.g. '/shifts/publish/'
      * @param  array  $params  An array of data used to create the object.
      * @param  array  $headers Array of custom headers to be passed
      * @return array           Object of json decoded API response.
      */
-    public function post($method, $params = array(), $headers = array()) {
+    public function post($method, $params = [], $headers = []) {
         return $this->makeRequest($method, self::METHOD_POST, $params, $headers);
     }
 
     /**
      * Create an object. Helper method for post.
+     *
      * @param  string $method  The API method to call, e.g. '/users/'
      * @param  array  $params  An array of data used to create the object.
      * @param  array  $headers Array of custom headers to be passed
      * @return array           Object of json decoded API response.
      */
-    public function create($method, $params = array(), $headers = array()) {
+    public function create($method, $params = [], $headers = []) {
         return $this->post($method, $params, $headers);
     }
 
     /**
      * Update an object. Must include the ID.
+     *
      * @param  string $method  The API method to call, e.g. '/users/1'
      * @param  array  $params  An array of data to update the object. Only changed fields needed.
      * @param  array  $headers Array of custom headers to be passed
      * @return array           Object of json decoded API response.
      */
-    public function update($method, $params = array(), $headers = array()) {
+    public function update($method, $params = [], $headers = []) {
         return $this->makeRequest($method, self::METHOD_PUT, $params, $headers);
     }
 
     /**
      * Delete an object. Must include the ID.
+     *
      * @param  string $method  The API method to call, e.g. '/users/1'
      * @param  array  $params  An array of arguments to pass to the method.
      * @param  array  $headers Array of custom headers to be passed
      * @return array           Object of json decoded API response.
      */
-    public function delete($method, $params = array(), $headers = array()) {
+    public function delete($method, $params = [], $headers = []) {
         return $this->makeRequest($method, self::METHOD_DELETE, $params, $headers);
     }
 
     
     /**
      * Performs the underlying HTTP request. Exciting stuff happening here. Not really.
+     *
      * @param  string $method  The API method to be called
      * @param  string $request The type of request
      * @param  array  $params  Assoc array of parameters to be passed
      * @param  array  $headers Assoc array of custom headers to be passed
      * @return array           Assoc array of decoded result
      */
-    private function makeRequest($method, $request, $params = array(), $headers = array()) {
+    private function makeRequest($method, $request, $params = [], $headers = []) {
 
-        $url = $this->api_endpoint.'/'.$method;
+        $url = static::API_ENDPOINT.'/'.$method;
 
         if ($params && ($request == self::METHOD_GET || $request == self::METHOD_DELETE)) {
             $url .= '?'.http_build_query($params);
@@ -131,7 +144,7 @@ private function makeRequest($method, $request, $params = array(), $headers = ar
             $headers['W-Token'] = $this->api_token;
         }
 
-        $header_data = array();
+        $header_data = [];
         foreach ($headers as $k=>$v) {
             $headers_data[] = $k.': '.$v;
         }
@@ -144,7 +157,7 @@ private function makeRequest($method, $request, $params = array(), $headers = ar
         curl_setopt($ch, CURLOPT_TIMEOUT, 10);
         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $this->verify_ssl);
 
-        if (in_array($request, array(self::METHOD_POST, self::METHOD_PUT, self::METHOD_PATCH))) {
+        if (in_array($request, [self::METHOD_POST, self::METHOD_PUT, self::METHOD_PATCH])) {
             curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params));
         }
 
@@ -158,21 +171,22 @@ private function makeRequest($method, $request, $params = array(), $headers = ar
 
     /**
      * Login helper using developer key and credentials to get back a login response
+     *
      * @param  $key      Developer API key 
      * @param  $email    Email of the user logging in
      * @param  $password Password of the user
-     * @return    
+     * @return object
      */
     public static function login($key, $email, $password) {
-        $params = array(
+        $params = [
             "username" => $email,
             "password" => $password
-        );
-        $headers = array(
+        ];
+        $headers = [
             'W-Key' => $key
-        );
+        ];
 
-        $login = new self();
+        $login = new static;
         $response = $login->makeRequest("login", self::METHOD_POST, $params, $headers);
 
         return $response;