factor out special newrelic handling
error out if composer.phar isn't executable
Merge branch 'develop' into refactor_special_exts
fix exts var access in function
Merge branch 'refactor_special_exts' into develop
fix PHP 5.6.3 build :(
PHP/5.6.4RC1
Added blackfire deploy steps
Merge pull request #94 from deguif/blackfire_refactor_specials_exts

Add blackfire install on heroku