update numbers to 3.1.0 for release

Author: fchauveau

README.md

@@ -31,7 +31,7 @@ Including in Your Project
 ### Gradle
 
 ```groovy
-compile 'com.code-troopers.betterpickers:library:3.0.2'
+compile 'com.code-troopers.betterpickers:library:3.1.0'
 ```
 
 ### Maven
@@ -40,7 +40,7 @@ compile 'com.code-troopers.betterpickers:library:3.0.2'
 <dependency>
   <groupId>com.code-troopers.betterpickers</groupId>
   <artifactId>library</artifactId>
-  <version>3.0.2</version>
+  <version>3.1.0</version>
   <type>aar</type>
 </dependency>
 ```

gradle.properties

@@ -16,8 +16,8 @@
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
-VERSION_NAME=3.0.2
-VERSION_CODE=302
+VERSION_NAME=3.1.0
+VERSION_CODE=310
 GROUP=com.code-troopers.betterpickers
 
 ANDROID_BUILD_MIN_SDK_VERSION=9