Create INSTALL.md

Proto version of the installation instructions
Create RELEASE-NOTES

Move this file from the base directory
Rename RELEASE-NOTES to RELEASE-NOTES.md
Delete RELEASE-NOTES.md

Moved to /doc/ directory
Update INSTALL.md

* Add version and compatibility information
* Several tweaks
Update README.md

Fix link to installation instructions
Update INSTALL.md

Some small tweaks
Merge pull request #4 from kghbln/master

Add installation instructions, move documents to new "doc" folder