Merge pull request #172 from jgabrielfreitas/master

Update README.md

Author: braebot

README.md

@@ -13,7 +13,7 @@ All releases follow [semantic versioning](http://semver.org/).
 
 The latest version is available via `mavenCentral()`.  Just add the following dependency:
 
-```
+```gradle
 compile 'io.card:android-sdk:5.4.2'
 ```
 
@@ -45,7 +45,7 @@ A manual entry fallback mode is provided for devices that do not meet these requ
 
 ##### If you use gradle, then add the following dependency from `mavenCentral()`:
 
-```
+```gradle
 compile 'io.card:android-sdk:5.4.2'
 ```