README with Travis badge

Author: VladUreche

README.md

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 dotty
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+[![Build Status](https://travis-ci.org/lampepfl/dotty.png?branch=master)](https://travis-ci.org/lampepfl/dotty)
+
 Dotty is a platform to try out new language concepts and compiler technologies for Scala. The focus is mainly on simplification. We remove extraneous syntax (e.g. no XML literals), and try to boil down Scala's types into a smaller set of more fundamental constructors. The theory behind these constructors is researched in [DOT](http://www.cs.uwm.edu/~boyland/fool2012/papers/fool2012_submission_3.pdf), a calculus for dependent object types. 
 
 The dotty compiler is largely a new design. It takes a more functional approach than current scalac, paired with aggressive caching to achieve good performance. At present, only the frontend (parser and type-checker) exists; the transformation and code generation phases remain to be written.