Update README.md

Update README.md

Merge pull request DefectDojo#180 from CCoffie/master

Fixing Re-Importing scan functionality

Release 1.1.2

catching and correcting datetime bug

Update CONTRIBUTING.md

Merge pull request DefectDojo#55 from rackerlabs/ansible_edits

Updating ansible playbooks with new bower/pip requirements

added add_arguments method now required by Django 1.8

updated version number to 1.0.3

* Added Endpoint as a model with add, edit, delete, report, and metrics.

    * A Django management script has been added to aid in the migration from text based endpoints to model based ones.
    * You can run `./manage.py migrate_endpoints`
    * The script will look for endpoints in the endpoint and description fields and convert them to and instance of the Endpoint model.
    * Before you run the script you can add host names, ip addresses, domains, etc that should be excluded to the `exclude` list on line 24.
    * The legacy `endpoint` field will be removed in version 1.0.3
* Added ability to delete Products and Engagements
* Improved functionality for Product Authorized Users (non staff users), can now:
    * View Products
    * View Endpoints
    * View Findings
    * Generate reports for endpoints, products
    * Set up port scan for product
        * View scan results
        * Kickoff on demand scans
        * Edit scan settings
    * View Metrics
    * Add finding notes
* Finding reports now use the finding id as a reference rather than the foor loop counter.
* Improved Ansible install script.
    * More fault-tolerant, and provides better information on failures.
* tastypie_swagger fixes
* Minor CSS and HTML updates
* New BSD License

This release requires database table updates if upgrading from previous version.  This can be accomplished with:
    `./manage.py makemigrations dojo`
    `./manage.py migrate`