When decorating responses, make meta attributes available under their name rather than meta[name]
Tidy up packages organization

--HG--
rename : src/main/java/com/vtence/molecule/Matcher.java => src/main/java/com/vtence/molecule/matchers/Matcher.java
rename : src/main/java/com/vtence/molecule/Middleware.java => src/main/java/com/vtence/molecule/middlewares/Middleware.java
rename : src/main/java/com/vtence/molecule/MiddlewareStack.java => src/main/java/com/vtence/molecule/middlewares/MiddlewareStack.java
rename : src/test/java/com/vtence/molecule/MiddlewareStackTest.java => src/test/java/com/vtence/molecule/middlewares/MiddlewareStackTest.java
Initial support for rendering templates using Mustache

--HG--
rename : src/test/resources/assets/image.png => src/test/resources/assets/images/sample.png
Merge waffle.io badge in README
Add support for rendering views as templates and provide a first rendering engine based on Mustache
Use a random available port for the server when none is specified
Display issues being worked on project page