enforce minium Java and Maven requirements

Author: aozarov

pom.xml

@@ -86,6 +86,29 @@
   </pluginRepositories>
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>1.4</version>
+        <executions>
+          <execution>
+            <id>enforce-maven</id>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <requireMavenVersion>
+                  <version>[3.0,)</version>
+                </requireMavenVersion>
+                <requireJavaVersion>
+                  <version>[1.7,)</version>
+                </requireJavaVersion>
+              </rules>    
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>exec-maven-plugin</artifactId>