edited readme for maven snapshot

Author: Nakul Sabharwal

README.md

@@ -35,6 +35,25 @@ Add the dependency in `dependencies` in pom.xml
 </dependency>
 ```
 
+Add in `project`
+```
+<profiles>
+  <profile>
+     <id>allow-snapshots</id>
+        <activation><activeByDefault>true</activeByDefault></activation>
+     <repositories>
+       <repository>
+         <id>snapshots-repo</id>
+         <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+         <releases><enabled>false</enabled></releases>
+         <snapshots><enabled>true</enabled></snapshots>
+       </repository>
+     </repositories>
+   </profile>
+</profiles>
+
+```
+
 ## 2. Getting started
 
 ### 2.1 Register your application