Add semantic versioning tagging



Deploy Plan
-----------
Does Infrastructure need to know anything special about this deploy? If so, keep this section and fill it in. **Otherwise, delete it.**

Rollback Plan
-------------
**If this pull request requires anything more complex (e.g., rolling back a migration), you MUST update this section. Otherwise, delete this note.**

To roll back this change, revert the merge with `git revert -m 1 MERGE_SHA` and perform another deploy.

URLs
----
* [Jira issue MOBILE-635](https://sportngin.atlassian.net/browse/MOBILE-635)

QA Plan
-------
Provide a detailed QA plan, or other developers will retain the right to mock you mercilessly.

Seems like we could shrink this down with a little:

```ruby
def ask_user_version
  choices = ["Major", "Minor", "Patch"]
  response = cli.ask("Which version section do you want to increment?", choices)
  instance_variable_set("#{response.down_case}=", true)
end
```