moar-readme (#72)

* add build status, update links, add how to contrib

* add codecov badge

Author: mattiaerre

README.md

@@ -1,6 +1,9 @@
 # prettier-plugin-solidity
 
-work in progress [prettier plugin](https://github.com/prettier/prettier/issues/4180) for [solidity](https://github.com/ethereum/solidity)
+[![Build Status](https://travis-ci.com/prettier-solidity/prettier-plugin-solidity.svg?branch=master)](https://travis-ci.com/prettier-solidity/prettier-plugin-solidity)
+[![codecov](https://codecov.io/gh/prettier-solidity/prettier-plugin-solidity/branch/master/graph/badge.svg)](https://codecov.io/gh/prettier-solidity/prettier-plugin-solidity)
+
+This is a work in progress [Prettier Plugin](https://prettier.io/docs/en/plugins.html) for [Solidity](https://github.com/ethereum/solidity).
 
 ## Installation and usage
 
@@ -21,3 +24,15 @@ Or you can use it as part of your linting to check that all your code is prettif
 ```
 "lint": "prettier --list-different **/*.sol"
 ```
+
+## Contributing
+
+1. [Fork it](https://github.com/prettier-solidity/prettier-plugin-solidity/fork)
+2. Create your feature branch (`git checkout -b feature/fooBar`)
+3. Commit your changes (`git commit -am 'Add some fooBar'`)
+4. Push to the branch (`git push origin feature/fooBar`)
+5. Create a new Pull Request
+
+## License
+
+Distributed under the MIT license. See [LICENSE](LICENSE) for more information.