removed submodule
subrepo clone: git@github.com:ingydotnet/pegex-pm.git (master) -> pegex-pm/

  subdir: pegex-pm
  remote: git@github.com:ingydotnet/pegex-pm.git
  branch: master
  commit: a7f2a78

git-subrepo version: 0.1.0
Merge subrepo commit '23cd7da'
Remove doc refs to submodules
Move pegex-pm to the ext/ directory

This is a new standard for externals