Add recipe for magit-gerrit
magit-gerrit recipe
Merge branch 'magit-gerrit' of git://github.com/dougm/el-get into dougm-magit-gerrit

* 'magit-gerrit' of git://github.com/dougm/el-get:
  Add recipe for magit-gerrit
Use :post-init for go-flymake rather than :features
Add go-errcheck and go-lint to exec-path

Allows both flymake (env PATH) and flycheck (exec-path) to find these programs.
Add :post-init for flycheck-color-mode-line-mode

Enables the mode via flycheck-mode-hook after flycheck is loaded
Add flycheck-cask recipe
Add flycheck-pos-tip recipe