Move information from README.txt to other files

Conflicts:
	README.txt

AUTHORS.md

@@ -1,6 +1,13 @@
 # Natural Language Toolkit (NLTK) Authors
 
-The following people have contributed to NLTK:
+## Original Authors
+
+- Steven Bird <[email protected]>
+- Edward Loper <[email protected]>
+- Ewan Klein <[email protected]>
+
+
+## Contributors
 
 - Rami Al-Rfou'
 - Mark Amery

CONTRIBUTING.md

@@ -1,13 +1,11 @@
-Contributing to NLTK
-====================
+# Contributing to NLTK
 
 Hi! Thanks for your interest in contributing to [NLTK](http://www.nltk.org/).
 :-) In this document we'll try to summarize everything that you need to know to
 do a good job.
 
 
-Code and Issues
----------------
+## Code and Issues
 
 We use [GitHub](https://www.github.com/) to host our code repositories and
 issues. The [NLTK organization on GitHub](https://github.com/nltk) has many
@@ -115,11 +113,16 @@ the desired feature.
 
 ### Continuous Integration
 
-We have a continuous integration service (Jenkins) running on:
-<https://jenkins.shiningpanda.com/nltk/>.
+The continuous integration test suite previously running at [Shining
+Panda](http://shiningpanda.com) is down due to them having taken their Clap de
+Fin. There have been some investigations into moving to other CI, but no
+official build is running right now. This may change in the near future.
 
+`nltk/test/runtests.py` is a good starting point for running tests locally, but
+note that the suite is currently failing.
 
-### Discussion
+
+## Discussion
 
 We have two mail lists on Google Groups:
 

README.md

@@ -15,6 +15,20 @@ at [CONTRIBUTING.md](CONTRIBUTING.md).
 See also [How to contribute to NLTK](http://www.nltk.org/contribute.html).
 
 
+## Donate
+
+Have you found the toolkit helpful?  Please support NLTK development by donating
+to the project via PayPal, using the link on the NLTK homepage.
+
+
+## Citing
+
+If you publish work that uses NLTK, please cite the NLTK book, as follows:
+
+    Bird, Steven, Edward Loper and Ewan Klein (2009).
+    Natural Language Processing with Python.  O'Reilly Media Inc.
+
+
 ## Copyright
 
 Copyright (C) 2001-2015 NLTK Project