Add new matplotlib notebooks to README

Author: donnemartin

README.md

@@ -201,6 +201,21 @@ IPython Notebook(s) demonstrating matplotlib functionality.
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 | [matplotlib](http://nbviewer.ipython.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/matplotlib.ipynb) | Python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. |
 | [matplotlib-applied](http://nbviewer.ipython.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/matplotlib-applied.ipynb) | Apply matplotlib visualizations to Kaggle competitions for exploratory data analysis.  Learn how to create bar plots, histograms, subplot2grid, normalized plots, scatter plots, subplots, and kernel density estimation plots. |
+| [Introduction-To-Matplotlib](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.00-Introduction-To-Matplotlib.ipynb) | Introduction to Matplotlib. |
+| [Simple-Line-Plots](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.01-Simple-Line-Plots.ipynb) | Learn about simple line plots in Matplotlib. |
+| [Simple-Scatter-Plots](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.02-Simple-Scatter-Plots.ipynb) | Learn about simple scatter plots in Matplotlib. |
+| [Errorbars.ipynb](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.03-Errorbars.ipynb) | Learn about visualizing errors in Matplotlib. |
+| [Density-and-Contour-Plots](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.04-Density-and-Contour-Plots.ipynb) | Learn about density and contour plots in Matplotlib. |
+| [Histograms-and-Binnings](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.05-Histograms-and-Binnings.ipynb) | Learn about histograms, binnings, and density in Matplotlib. |
+| [Customizing-Legends](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.06-Customizing-Legends.ipynb) | Learn about customizing plot legends in Matplotlib. |
+| [Customizing-Colorbars](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.07-Customizing-Colorbars.ipynb) | Learn about customizing colorbars in Matplotlib. |
+| [Multiple-Subplots](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.08-Multiple-Subplots.ipynb) | Learn about multiple subplots in Matplotlib. |
+| [Text-and-Annotation](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.09-Text-and-Annotation.ipynb) | Learn about text and annotation in Matplotlib. |
+| [Customizing-Ticks](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.10-Customizing-Ticks.ipynb) | Learn about customizing ticks in Matplotlib. |
+| [Settings-and-Stylesheets](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.11-Settings-and-Stylesheets.ipynb) | Learn about customizing Matplotlib: configurations and stylesheets. |
+| [Three-Dimensional-Plotting](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.12-Three-Dimensional-Plotting.ipynb) | Learn about three-dimensional plotting in Matplotlib. |
+| [Geographic-Data-With-Basemap](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.13-Geographic-Data-With-Basemap.ipynb) | Learn about geographic data with basemap in Matplotlib. |
+| [Visualization-With-Seaborn](http://nbviewer.jupyter.org/github/donnemartin/data-science-ipython-notebooks/blob/master/matplotlib/04.14-Visualization-With-Seaborn.ipynb) | Learn about visualization with Seaborn. |
 
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