Pass callback to env render instead of the other way 'round'
Merge pull request #127 from faceleg/master

Pass callback to env render instead of the other way 'round'
draft of precompileString
Merge remote-tracking branch 'origin/master'
improve precompileString
standardize precompiler output between strings, files, and directories
refactor precompiling API
fix formatting in example precompile
add renderString, make fs.watch not persistent, and remake browserfiles
add renderString, also allow getTemplate to be called synchronously
make FileSystemLoader search cwd by default
remove templatesPath for `configure`, should be first argument
fix precompile API (fixes #129)
always force compilation of templates even if cached (fixes #130)
Better option handling