migrated code to python 3
added instructions for ST3 users
dependency isolation
Fixes to make it run on Sublime Text 3.

In general, relative imports are discouraged so appended the local
path to sys.path. Also moved the insert code into a separate
TextCommand (required by ST3, due to handling of edits).
Cleanup of patch.
Merge pull request #30 from simait/python3

Fixes to make it run on Sublime Text 3.
refs #31 - fixes tpm file writing op
refs #31 - restored default settings loading
added .no-sublime-package to avoid problem with zip file version
Merge branch 'python3' into new_master