use RevolutionAnalytics CRAN mirror
show LD_LIBRARY_PATH and PKG_CONFIG_PATH before building R binaries
added original features.h file for easy comparison
added utility for downloading the R binaries created by the vulcan build server
utility for publishing buildpack (provided heroku-buildpacks plugin is installed locally)
added .env file for foreman
added .profile.d script for setting environment variables
revision to build script
improvements to compile, including support for .profile.d
improvements to compile, including support for .profile.d
no need to fix up environment variables
updated readme for slug size details
Merge pull request #18 from virtualstaticvoid/fixes

Various Improvements & Fixes