Updating with brief descriptions

Author: samuelleach

README.md

@@ -1,2 +1,5 @@
 # python-notebooks
 Python notebooks for demonstrating various ideas, APIs, libraries.
+
+- [planout-abtest](https://github.com/samuelleach/python-notebooks/blob/master/planout-abtest/1.0-planout-abtest-analysis.ipynb) - Defining an AB test experiment with [Planout](https://facebook.github.io/planout/), simulating exposures, and analysing the results.
+- [prophet-uber](https://github.com/samuelleach/python-notebooks/blob/master/prophet-uber/1.0-sl-prophet-uber.ipynb) - Timeseries forecasting of Uber data using [Prophet](https://facebookincubator.github.io/prophet/), which includes a trend, a weekly component and the impact of holidays.