Revision & New glyphs (Regular)

Revised glyphs are colored in Orange.
New glyphs are colored Red.
More base glyphs, Half forms and Marks are added.
3 pdf DroidDevanagari_samples.
First 100 glyphs each for Regular & Bold

Updated Droid Devanagari UFO files.
Worked on Droid Devanagari Bold.
First 100 glyphs (total 200 glyphs) pdf. included
Merge pull request #1 from Neelakash/master

First 100 glyphs