Fix: bot name.

DEPLOYMENT.md

@@ -6,7 +6,7 @@ Create a new Bot Integration under [services/new/bot](http://slack.com/services/
 
 On the next screen, note the API token.
 
-## Deploy Slack-Gamebot
+## Deploy Slack-Mathbot
 
 [![Deploy to Heroku](https://www.herokucdn.com/deploy/button.png)](https://heroku.com/deploy)
 
@@ -22,7 +22,7 @@ heroku config:add SLACK_API_TOKEN=...
 
 #### GIPHY_API_KEY
 
-Slack-Gamebot replies with animated GIFs. While it's currently not necessary, you may need to set GIPHY_API_KEY in the future, see [github.com/Giphy/GiphyAPI](https://github.com/Giphy/GiphyAPI) for details.
+Slack-Mathbot replies with animated GIFs. While it's currently not necessary, you may need to set GIPHY_API_KEY in the future, see [github.com/Giphy/GiphyAPI](https://github.com/Giphy/GiphyAPI) for details.
 
 ### Heroku Idling