[Fix #756] Added helm-ag to auto install list
[Fix #753] Add a note for helm-M-x
Merge pull request #759 from tuhdo/master

[Fix #753] Add a note for helm-M-x
Merge pull request #757 from k1-hedayati/patch-1

Added helm-ag to auto install list [Fix #756]
Merge remote-tracking branch 'upstream/master'