docs(README): updated license info

bumped license years to cover 2016-2018

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Andy Craze
+Copyright (c) 2016-2018 Andy Craze
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -18,4 +18,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.

README.md

@@ -1,7 +1,6 @@
 [![travis build](https://img.shields.io/travis/accraze/split-md.svg)](https://travis-ci.org/accraze/split-md)
 [![version](https://img.shields.io/npm/v/split-md.svg)](https://www.npmjs.com/package/split-md)
 [![license](https://img.shields.io/npm/l/split-md.svg)](https://www.npmjs.com/package/split-md)
-[![Codecov](https://img.shields.io/codecov/c/github/accraze/split-md.svg)](https://codecov.io/github/accraze/split-md)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/)
 
@@ -34,5 +33,5 @@ In the above example we are reading in `tests/testdata.md`. Our delimiter is whe
 
 ## License:
 
-[MIT](https://github.com/accraze/split-md/blob/master/LICENSE) License 2016 © Andy Craze
+[MIT](https://github.com/accraze/split-md/blob/master/LICENSE) License 2016-2018 © Andy Craze & contributors