Update README for CMS Git tools
Merge pull request #303 from dabelknap/git_recipe

Git Recipe
Remove external libs from recipeGIT
Change HDF5 link to a permanent one
Use symlinks in recipGIT

 - Symlink environment.sh and install_python.sh
 - Avoids having duplicate files everywhere
Merge pull request #304 from dabelknap/python_recipe

Fix Python Recipe --> Looks good, lets merge it
added hexa state producer sequence
small correction
remove tau final states from hexa
remove photon final states from hexa
fix for Legend labels in plot_mc_vs_data
adding bprime samples to metadata
added rest of data samples for Bprime analysis
small correction to Bprime data defs
adding bprime samples and ttw ttz samples found in /hdfs/store/user/dntaylor/
added bprime final state shortcut
adding placeholder cross section for bprime mc
fixed dict access of xs_bprime
fixed dict access of xs_bprime
adding bprime datadefs for cross section calculation