test and implementation for blacklisting LANG; fixed failure tests

only test cedar-14 by default

Updating image to align with marketing

updating the buildpack image to align better with marketing (and fix the code block in the background)

Fiznool master

use HTTPS for downloading Node

Retry curl

search node_modules after normal $PATH

fix tests for node v5

test and implementation for compiling the same directory multiple times

Travis

replace tee/sed/awk with a simple echo loop

test and implementation for more robust output formatting