Initial commit
1) added announcement model, controller and associated views
2) adjusted routes.rb to include announcements
updated announcements for teams
removed binding.pry's
edited application.html.haml file to remove admin/announcements option
updated routes and announcements controller
added markdown support for announcements
added ability to delete announcement
updated routes
truncating announcement title and description in views
added factory for announcements
updated dashboard controller to limit db strain
added team_id index to announcements
dashboards controller updated for last 5 announcements; announcement and team views updated to limit to 50 for database strain
Add test for viewing announcements.

Pending tests for adding/removing announcements.
added tests for adding and deleting announcements
Remove blank lines at end of file.
Convert unncessary instance variables to locals.
Merge pull request #134 from LaunchAcademy/vr-announcements

RFR -- Announcements