Moved first drafts of release docs to LeoDocs.leo

Leo build: 20141015171926
Retired NodeIndices.toString and use NI.tupleToString instead.  All tests pass.  One test relating to NI.toString was retired.

Leo build: 20141015173353
Merge branch 'master' of https://github.com/leo-editor/leo-editor

Conflicts:
	leo/core/commit_timestamp.json

Leo build: 20141015173911