Fix github URL for drupal submodule in .gitmodules

URLs starting with git@github.com are only accessible by the repository owners, but not by other users.
Fix github URL for drupal submodule in README.txt

URLs starting with git@github.com are only accessible by the repository owners, but not by other users.
Merge pull request #22 from znerol/patch-2

Fix github URL for drupal submodule in README.txt
Merge pull request #21 from znerol/patch-1

Fix github URL for drupal submodule in .gitmodules
removed environment variables around path to json settings file to run only local version that is in repo
replaced standard drupal install by openatrium2 cloned from github repo