Polishing things up to v2.0.0 launch 🚀

[ravanscafi]

• [X] Travis Script
• [X] Readme
• [X] Composer.json
• [x] Coveralls
• [x] StyleCI
• [X] Merging #81
• [ ] Changing leroy-merlin-br/mongolid to stable version

[coveralls]

Changes Unknown when pulling a64816550b418ccd5625425f5105d74460659a88 on polishing into \ on v2.0.0**.

[coveralls]

Changes Unknown when pulling 538bed12e73938ae423c4265c39d08cb91a5cd39 on polishing into \ on v2.0.0**.