added dendrogramming script
reorg
py/dendro update
dendro plotting ready for eta run
dendro cont'd
moved readme.md -> readme.rst and updated python code
Merge branch 'master' of git://github.com/BGPS/distance_omnibus2

Conflicts:
	README.md
README updated with methods & figures
Merge pull request #2 from keflavich/master

Dendrogramming script