Merge pull request #9 from mmckerns/master

merge INSTALL.txt into README
Text formatting, no change in content.
Fix the official name for Columbia trustees.
Fix the official name for Columbia trustees.
Rename original license to LICENSE_DANSE.
placeholder for the new license.
Add links to recommended projects.

Spell check and clarify what optional software does what.
BNL license text approved by Dorene.

To be merged to each diffpy package repositories.
Add BNL license text.

Merge branch 'license' from diffpy-release.
remove intro.rst since most content are either in the README.txt or
outdated.
update doc and api doc to 1.0b4-1, move all (examples).rst to one
directory
link installation in doc to README.rst on github
Use version.cfg when git is not installed