Prepare version 1.2.2

Change-Id: I558a951b0b8771ba822651180280268b1f270bf3
diff --git a/build.gradle b/build.gradle
index 0564f8b..3736a7c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,7 +18,7 @@
 
 // group = 'com.intel.jndn.management'
 group = 'net.named-data.jndn-extra'
-version = '1.2.1'
+version = '1.2.2'
 
 sourceCompatibility = JavaVersion.VERSION_1_8
 targetCompatibility = JavaVersion.VERSION_1_8