Added readme for PySpark talk

Author: shagunsodhani

spark/README.md

@@ -0,0 +1,16 @@
+## Title
+
+Introduction to PySpark
+
+## Slides
+
+[https://slides.com/shagunsodhani/introduction-to-pyspark/](https://slides.com/shagunsodhani/introduction-to-pyspark/)
+
+## Demo
+
+Execute `run.sh` to run the demo locally or use [this.](https://github.com/shagunsodhani/talks/blob/master/spark/PySpark.ipynb)
+
+## Event
+
+[PyDelhi Meetup](http://www.meetup.com/pydelhi/events/226049222/)
+