Add `sqlite3` gem.

Signed-off-by: Israel Buitron <israel.buitron@gmail.com>
Bug fixed.

Detail:
- Not valid reference to `current_user` data.

Signed-off-by: Israel Buitron <israel.buitron@gmail.com>
Merge remote-tracking branch 'origin/master'

Conflicts:
	Gemfile.lock
`foreman` gem added.

Signed-off-by: Israel Buitron <israel.buitron@gmail.com>
Merge remote-tracking branch 'origin/foreman'

Conflicts:
	Gemfile.lock
`.env` added to `.gitignore` file.

Signed-off-by: Israel Buitron <israel.buitron@gmail.com>
`Procfile` added.

Signed-off-by: Israel Buitron <israel.buitron@gmail.com>
Merge remote-tracking branch 'origin/foreman'