[maven-release-plugin] prepare for next development iteration

Author: William Delanoue

pom.xml

@@ -7,7 +7,7 @@
     </parent>
     <groupId>com.github.fakemongo</groupId>
     <artifactId>fongo</artifactId>
-    <version>2.1.1</version>
+    <version>2.1.2-SNAPSHOT</version>
     <name>fongo</name>
     <description>Fake in-memory mongo</description>
     <url>https://github.com/fakemongo/fongo</url>