Merge pull request #367 from ameraner/update_readme_for_install_docs

README.md

@@ -79,12 +79,12 @@ SIFT can be installed as an all-in-one bundled application or the python
 library "uwsift" can be installed in a traditional python environment.
 
 Detailed installation instructions can be found on the
-[GitHub Wiki](https://github.com/ssec/sift/wiki/Installation-Guide).
+[installation documentation](https://sift.readthedocs.io/en/latest/installation.html).
 
 ## Contributors
 
 SIFT is an open source project welcoming all contributions. See the
-[Contributing Guide](https://github.com/ssec/sift/wiki/Contributing)
+[Contributing Guide](https://sift.readthedocs.io/en/latest/dev_guide/contributing.html)
 for more information on how you can help.
 
 ### Building and releasing