Bump the version to 1.3.1

Sam Wierema · Sam Wierema · commit f603b98b15ff · 2016-02-01T11:40:03.000+01:00
diff --git a/lib/messagebird.rb b/lib/messagebird.rb
@@ -2,7 +2,7 @@
 $:.unshift(libdir) unless $:.include?(libdir)
 
 module MessageBird
-  CLIENT_VERSION = '1.3.0'
+  CLIENT_VERSION = '1.3.1'
   ENDPOINT       = 'https://rest.messagebird.com'
 end
 
