Merge pull request #223 from ahmet-celik/master

Added zeroing CFF charset format 1 & updated README.md
Merge pull request #224 from ahmet-celik/master

Updated README.md
Minor fixes for FireFox and IE
Merge remote-tracking branch 'upstream/master'
Merge pull request #225 from bstell/master

Minor fixes for FireFox and IE
Added debug display to filesystem demos
Merge branch 'master' of https://github.com/googlei18n/incremental-fonts
Explanations added to demo pages