Remove broccoli-env dependency
add process to jshint globals
switch to using EMBER_ENV and remove now unused env param to EmberApp constructor
Merge pull request #429 from jakecraige/remove-broccoli-env

Remove broccoli-env dependency
fix pleasant progress throwing error when ran from child_process.exec, references #434
check if stdout is TTY before trying to clearLine or cursorTo(0)