Fix for fsharp/fsharpbinding#763

Added an existence check to the buffer scoped shouldParse variable in
OnCursorHold.  Prevents the error mentioned in bug report.
added <leader>c to return after a <leader>d (go to decl)
leader-s documentation
documentation tweaks
Merge pull request #766 from sillyotter/master

Fix for fsharp/fsharpbinding#763
Merge pull request #767 from kjnilsson/master

vim: added <leader>s to return after a <leader>d (go to decl)
762 clear loclist, signs and matches on buffer load.
Merge pull request #768 from kjnilsson/master

762 clear loclist, signs and matches on buffer load.
Make sure to run RestorePackages first in FAKE
WIP Integrate with 0.0.0.71
WIP Almost there
[ci skip]
First complete cut