Add Phalcon

Initial set-up for adding Phalcon to the repo. Curently, it works, but
re-downloads and builds upon a git push. This is because I cannot seem
to figure out why I cannot properly determine if the phalcon core
install file exists.
fix issue with not detecting if phalcon was built or installed
Add ability to download different versions

Download phalcon from branches, instead of tags. This will allow you to
download beta and alphas. Not just releases.
moved some files around and update check_phalcon
update check function to properly detect if has been downloaded and installed
update index.php with simple Phalcon micro example
update index.php with simple Phalcon micro example
Merge branch 'Add-Phalcon'