Fix the errors reported by fontforge for sfd.

Used ttf->sfd->ttf trick
Add more credits information
Remove misplaced glyphs in the position of + and 1
Add more Bengali glyphs
Added Lao support
Fixed the scaling and Bearing of Lao glyphs
Add glyphs for Divehi from GNU FreeSans

Fixes issue #9
Add javanese glyphs from TuladhaJejeg font
Updated CREDITS
Add Sinhala glyphs from GNU FreeSerif

Fixes issue #22 and #32
Update README.md

Added download link
Update README.md