Add git-commit-mode to required packages

Found in MELPA, separate from magit
Remove org clocking related settings

Not used.
Add license information
Merge branch 'master' of origin

origin at github.com:dschwilk/emacs-config
Add org-babel support for LaTeX
Add support for polymode (Rmd + knitr)

See https://github.com/vitoshka/polymode
Add org-babel support for LaTeX
Add support for polymode (Rmd + knitr)

See https://github.com/vitoshka/polymode
Merge branch 'master' of github.com:dschwilk/emacs-config