Update readme (#170)

* Update readme

* Show master build status for travis

README.md

@@ -6,11 +6,9 @@
 
 > A metalsmith plugin for layouts
 
-This plugin is a polyfill for rendering templates with templating languages that don't support inheritance. It passes your files to a template of your choice (a `layout`) as the variable `contents` and renders the result with the appropriate engine. It uses the file extension of your layout to infer which templating engine to use. So layouts with names ending in `.njk` will be processed as nunjucks, `.hbs` as handlebars, etc.
+This plugin allows you to wrap your files in a template (a `layout`) and abstract repetitive html. The plugin will pass the contents of your files as the variable `contents` and renders the result with the appropriate engine. It uses the file extension of your layout to infer which templating engine to use. So layouts with names ending in `.njk` will be processed as nunjucks, `.hbs` as handlebars, etc.
 
-The best way to render templates is with [metalsmith-in-place](https://github.com/metalsmith/metalsmith-in-place) and a templating language that supports inheritance (like [nunjucks](https://mozilla.github.io/nunjucks/templating.html#template-inheritance) or [pug](https://pugjs.org/language/inheritance.html)). That way you'll have a simpler setup that's less error-prone, with support for recursive templating, chained jstransformers and more. So only use this plugin if you have a good reason for wanting to render templates with a language that doesn't support inheritance (like handlebars).
-
-For support questions please use [stack overflow][stackoverflow-url] or our [slack channel][slack-url]. For templating engine specific questions try the aforementioned channels, as well as the documentation for [jstransformers](https://github.com/jstransformers) and your templating engine of choice.
+If you want to process templating syntax *in* your files, instead of wrapping them in a template, you can use [metalsmith-in-place](https://github.com/metalsmith/metalsmith-in-place). For support questions please use [stack overflow][stackoverflow-url] or our [slack channel][slack-url]. For templating engine specific questions try the aforementioned channels, as well as the documentation for [jstransformers](https://github.com/jstransformers) and your templating engine of choice.
 
 ## How does it work
 
@@ -227,7 +225,7 @@ There are several things that might cause you to get a `no files to process` err
 
 [MIT](https://ismay.mit-license.org/)
 
-[build-badge]: https://travis-ci.org/metalsmith/metalsmith-layouts.svg
+[build-badge]: https://travis-ci.org/metalsmith/metalsmith-layouts.svg?branch=master
 [build-url]: https://travis-ci.org/metalsmith/metalsmith-layouts
 [greenkeeper-badge]: https://badges.greenkeeper.io/metalsmith/metalsmith-layouts.svg
 [greenkeeper-url]: https://greenkeeper.io