Update code titles

Author: rossant

chapter01_basic/01_notebook.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Introducing IPython and the Jupyter Notebook"
+    "# 1.1. Introducing IPython and the Jupyter Notebook"
    ]
   },
   {

chapter01_basic/02_pandas.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Getting started with exploratory data analysis in the Jupyter Notebook"
+    "# 1.2. Getting started with exploratory data analysis in the Jupyter Notebook"
    ]
   },
   {

chapter01_basic/03_numpy.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Introducing the multidimensional array in NumPy for fast array computations"
+    "# 1.3. Introducing the multidimensional array in NumPy for fast array computations"
    ]
   },
   {
@@ -266,7 +266,6 @@
      "output_type": "stream",
      "text": [
       "134 ms ± 1.79 ms per loop (mean ± std. dev. of 7 runs,\n",
-      "    10 loops each)\n",
       "    1000 loops each)\n"
      ]
     }
@@ -286,7 +285,6 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "    10 loops each)\n",
       "1.54 ms ± 48.9 µs per loop (mean ± std. dev. of 7 runs\n",
       "    1000 loops each)\n"
      ]

chapter01_basic/04_magic.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Creating an IPython extension with custom magic commands"
+    "# 1.4. Creating an IPython extension with custom magic commands"
    ]
   },
   {

chapter01_basic/05_config.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Mastering IPython's configuration system"
+    "# 1.5. Mastering IPython's configuration system"
    ]
   },
   {

chapter01_basic/06_kernel.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Creating a simple kernel for Jupyter"
+    "# 1.6. Creating a simple kernel for Jupyter"
    ]
   },
   {

chapter02_best_practices/01_shell.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Learning the basics of the Unix shell"
+    "# 2.1. Learning the basics of the Unix shell"
    ]
   },
   {

chapter02_best_practices/02_py3.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Using the latest features of Python 3"
+    "# 2.2. Using the latest features of Python 3"
    ]
   },
   {

chapter02_best_practices/03_git.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Learning the basics of the distributed version control system Git"
+    "# 2.3. Learning the basics of the distributed version control system Git"
    ]
   },
   {

chapter02_best_practices/04_git_advanced.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# A typical workflow with Git branching"
+    "# 2.4. A typical workflow with Git branching"
    ]
   },
   {