Using non minified version of underscore

gets minified by require anyway so no point using pre minified
Updating all the packages

fixes a couple things and it's good to have newest versions
Making sure that buildTimeOptions copy still works
Ignoring build folder
Creating devbuild and releasebuild tasks

Specific tasks which only put the necessary files in dist
Fixing langtests
Writing git info to a file in dist
gitinfo task run after release build
Merge pull request #245 from rumblesan/build-system-tweaks

Build system tweaks
release build now still works if use has no .git dir
take 2: releasebuild works when not within a .git repo
updating the "how to build" guide
for webgl renderer: use bigger buffer if we can afford to
being conservative with buffer size in the case of small window
foregroundCanvasMaxScaleUpFactor: renaming and changing value to 2
doc about buffer sizing mechanism. closes https://github.com/davidedc/livecodelab/issues/223
commenting out some console.logs
updating buzz.js to latest
adding create.js sound library, in case it helps with IE
adding some examples collected over time