Merge branch 'release_2.0' of https://github.com/GwtMaterialDesign/gwt-material into release_2.0

Author: kevzlou7979

README.md

@@ -36,7 +36,7 @@ We created <a href="http://gwtmaterialdesign.github.io/gwt-material-demo/apidocs
 You can find lists of features by version <a href="https://github.com/GwtMaterialDesign/gwt-material/wiki/Changelog">here</a>.
 
 ### Migration
-[Migrating from 1.3 to 1.4](https://github.com/GwtMaterialDesign/gwt-material/wiki/Migrating-from-1.3-to-1.4)
+[Migrating from 1.3 to 1.4](https://github.com/GwtMaterialDesign/gwt-material/wiki/Migrating-from-1.3-to-1.4) <br/>
 [Migrating from 1.x to 2.0](https://github.com/GwtMaterialDesign/gwt-material/wiki/2.0---API-Changes)
 
 ## License