Repository: pandas-dev/pandas
Pull request: Add README improvements.
 - [Y] closes #16427 
 - [Y] whatsnew entry
** Included reference to contribute guide in READEME.
** In the "installation from source" section, refer to the actual section in the docs, instead of to the general website
** Update "Discussion and Development" section: remove reference to scipy mailing list, but add one to pandas-dev mailing list

Problem statement:
README improvements
* README fixes
** Include reference to contribute guide in READEME. Some people have had a hard time finding their way from the repo to the contribution guide.
** In the "installation from source" section, refer to the actual section in the docs, instead of to the general website
**  Update "Discussion and Development" section: remove reference to scipy mailing list, but add one to pandas-dev mailing list

Hints from issue discussion:
I'm fixing this now.

Commit message: Add README improvements.

Patch to review:
diff --git a/README.md b/README.md
index e05f1405419fc..212a8a1422789 100644
--- a/README.md
+++ b/README.md
@@ -204,7 +204,7 @@ python setup.py build --compiler=mingw32
 python setup.py install
 ```
 
-See http://pandas.pydata.org/ for more information.
+See **[the docs](http://pandas.pydata.org/pandas-docs/stable/install.html#installing-from-source)** for more information.
 
 ## License
 BSD
@@ -225,4 +225,16 @@ Python projects, questions are welcome on the scipy-user mailing
 list. Specialized discussions or design issues should take place on
 the PyData mailing list / Google group:
 
-https://groups.google.com/forum/#!forum/pydata
+https://mail.python.org/mailman/listinfo/pandas-dev
+
+## Contributing to pandas
+
+**[How to contribute.](http://pandas.pydata.org/pandas-docs/stable/contributing.html)**
+
+All contributions, bug reports, bug fixes, documentation improvements, enhancements and ideas are welcome.
+
+If you are simply looking to start working with the pandas codebase, navigate to the [GitHub “issues” tab](https://github.com/pandas-dev/pandas/issues) and start looking through interesting issues. There are a number of issues listed under [Docs](https://github.com/pandas-dev/pandas/issues?labels=Docs&sort=updated&state=open) and [Difficulty Novice](https://github.com/pandas-dev/pandas/issues?q=is%3Aopen+is%3Aissue+label%3A%22Difficulty+Novice%22) where you could start out.
+
+Or maybe through using pandas you have an idea of your own or are looking for something in the documentation and thinking ‘this can be improved’...you can do something about it!
+
+Feel free to ask questions on the [mailing list](https://groups.google.com/forum/?fromgroups#!forum/pydata) or on [Gitter](https://gitter.im/pydata/pandas).


Code review comments:
diff_hunk: @@ -225,4 +225,16 @@ Python projects, questions are welcome on the scipy-user mailing
 list. Specialized discussions or design issues should take place on
path: README.md
text: @user1:
can you remove the mention of scipy-user on the line above?

I would make the logic like "general questions are welcome on the pydata mailing list, specialized discussion related to pandas development on pandas-dev"