Added .gitmessage.txt Phabricator template
This is DEMO title

Summary:
Now Travis Node DEMO hosted on GitHub works with Phabricator by Loopus
on Digital Ocean

Test Plan:
1. <Write a real test plan.>
2. <"I am sure code works" is not a good explanation!>
3. <We will track you down.>

Reviewers:
stepanic

CC:

Maniphest Tasks:
T1