chore(Travis): Integrate TravisCI with readme badge

- setup travisci
- add travis badge to the readme

[Finishes #160795563]

README.md

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 # andela-teams-2
 [![Andela](https://andela-badge.herokuapp.com/)](https://andela.com)
+[![Build Status](https://travis-ci.org/andela/taps-client.svg?branch=staging)](https://travis-ci.org/andela/taps-client)
 [![Coverage Status](https://coveralls.io/repos/github/andela/taps-client/badge.svg?branch=code-coverage-integration-158580405)](https://coveralls.io/github/andela/taps-client?branch=code-coverage-integration-158580405)
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 [![Hound CI](https://camo.githubusercontent.com/23ee7a697b291798079e258bbc25434c4fac4f8b/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f50726f7465637465645f62792d486f756e642d6138373364312e737667)](https://houndci.com)
 
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 Andela Teams seeks to automate some of the routine actions taken by __simulations learning facilitators__ at Andela.
 
 Here is a useful scenario. When a new cohort (class) begins simulations (*sims*) at Andela, the cohort is broken into teams, and each team is assigned to a learning facilitator. The learning facilitator then creates a few Slack channels, a Github repo, and a Pivotal Tracker board. For each of these, the facilitator has to add every member of the team to the channel/repo/board. This is obviously a task that should be automated, especially considering that even the names of the channels/repo/board are always in a particular format. Andela Teams seeks to automate these and many more routine tasks performed by facilitators.