merging PR #324: Update badges
merging PR #324: Update badges

https://github.com/chaosbot/Chaos/pull/324: Update badges

Description:
- added travis badge
- updated gitter badge to `svg` to improve quality

Before:
![image](https://cloud.githubusercontent.com/assets/577316/26525202/f66eed68-434f-11e7-9d9f-d6bbee2e1dfc.png)

After:
![image](https://cloud.githubusercontent.com/assets/577316/26525201/e5d91262-434f-11e7-8b12-6d728e6d4f66.png)


:ok_woman: PR passed with a vote of 13 for and 0 against, with a weighted total             of 11.5 and a threshold of 6.2.

Vote record:
@Equim-chan: 1
@SlimxShadyx: 1
@Smittyvb: 1
@amoffat: 1
@anythingbot: 1
@eukaryote31: 1
@ike709: 1
@mark-i-m: 1
@phil-r: 1
@qgustavor: 1
@reddraggone9: 1
@rhengles: 1
@while-loop: 1
hongaar/chaos,chaosbot/Chaos,Chaosthebot/Chaos,mark-i-m/Chaos,rudehn/chaos,hongaar/chaos,hongaar/chaos,mark-i-m/Chaos,botchaos/Chaos,mark-i-m/Chaos,Chaosthebot/Chaos,mpnordland/chaos,Chaosthebot/Chaos,hongaar/chaos,phil-r/chaos,amoffat/Chaos,amoffat/Chaos,chaosbot/Chaos,amoffat/Chaos,chaosbot/Chaos,phil-r/chaos,amoffat/Chaos,mpnordland/chaos,rudehn/chaos,chaosbot/Chaos,eamanu/Chaos,phil-r/chaos,eamanu/Chaos,eamanu/Chaos,eamanu/Chaos,eamanu/Chaos,mark-i-m/Chaos,phil-r/chaos,amoffat/Chaos,rudehn/chaos,rudehn/chaos,botchaos/Chaos,Chaosthebot/Chaos,chaosbot/Chaos,botchaos/Chaos,mpnordland/chaos,phil-r/chaos,mpnordland/chaos,rudehn/chaos,mark-i-m/Chaos,botchaos/Chaos,hongaar/chaos,mpnordland/chaos,Chaosthebot/Chaos,botchaos/Chaos