Updated data file used for Getting Started and Profiling notebooks (#3262) (#3288)

* Updated data file used for Getting Started and Profiling notebooks

* Modified argument to parse_dates in Profiling and Getting Started notebooks

* Revert "Modified argument to parse_dates in Profiling and Getting Started notebooks"

This reverts commit 075c896.

* Updated installation instructions and get_data arguments in Getting Started and Profiling notebooks

Author: ckrapu

RELEASE-NOTES.md

@@ -28,6 +28,7 @@
 - Refactor SMC and properly compute marginal likelihood (#3124)
 - Removed use of deprecated `ymin` keyword in matplotlib's `Axes.set_ylim` (#3279)
 - Fix for #3210. Now `distribution.draw_values(params)`, will draw the `params` values from their joint probability distribution and not from combinations of their marginals (Refer to PR #3273).
+- Removed dependence on pandas-datareader for retrieving Yahoo Finance data in examples (#3262)
 - Rewrote `Multinomial._random` method to better handle shape broadcasting (#3271)
 
 ### Deprecations