removed sqlite3/pg from gemfile/gemfile.lock, database.yml refelected as per herokus instructions
Revert "removed sqlite3/pg from gemfile/gemfile.lock, database.yml refelected as per herokus instructions"

This reverts commit 16158117d7180a66e6e52ae19b8618ee303be5f1.
gemfile heroku sqlite changes, deleted contents of gemfile.lock