add additional metrics to make it easier to have different size icon fonts
Add woff data uri to generated CSS + template helper

refs #131
Support listen v1 and v2
Fixed bug where custom template path appears in output filenames. Fixes #172.
test both listen 1.x and 2.x
test both listen 1.x and 2.x
Merge branch 'font_metrics' of git://github.com/jlong/fontcustom into jlong-font_metrics
Update rspec tests to remove deprecated syntax.
Merge branch 'base64' of git://github.com/jvatic/fontcustom into jvatic-base64
Merge branch 'jvatic-base64' into development
Merge branch 'jlong-font_metrics' into development
Strip '.' from preview file; allow other characters in CSS selector
Merge branch 'skirchmeier-master' into development
Update template rspec to fix deprecation warnings.
Remove stray var from generate.py; skip subdirs when calc'ing hash; add SCSS vars