changed Heroku Quickstart filename, removed versioning and corrected spelling mistake on guide
changed Git Quickstart filename, correcting spelling mistake on guide
changed export locations to match new home under projects, rather than in Dropbox
added heroku create command, URL for developer guides on Github and a few visual tweaks
removed unwanted artifacts that were of to the side of the page, updated Export Bitmap path to new project location in local github repo.
added developer guides url, tweaked layout and font used for commands