Switched database from Postgres to SQLite

Updated database from Postgres to SQLite so it is easier to get the
application up and running for contributors.

Updated the database.yml file and gemfile
Updated the README with instructions to get the application running on local machines
Merge branch 'master' of github.com:districtem/rgmanager

Conflicts:
	Gemfile
	Gemfile.lock
Merge pull request #2 from tapangi/master

Merging updates to Root URL and Materials
Updated database from Postgres to SQLite to fix database value format issues.

Updated README with more explicit instructions for installing/running/editing the application on local machines in order for potential contributors to be more easily able to get the app running locally and contribute.
Update README.md
Update README.md

corrected some formatting issues.
Update README.md

editing content format
Merge pull request #3 from districtem/issue_19

Issue 19
Merge pull request #21 from districtem/master

Issue 19