Added google and sun configs to jar, issue #305

src/xdocs/cmdline.xml.vm

@@ -91,7 +91,8 @@ java -D<property>=<value>  \
           checkstyle-${projectVersion}-all.jar</a>.
           An example of run would be:
         <source>
-java -jar checkstyle-${projectVersion}-all.jar -c sun_checks.xml MyClass.java
+java -jar checkstyle-${projectVersion}-all.jar -c /sun_checks.xml MyClass.java
+java -jar checkstyle-${projectVersion}-all.jar -c /google_checks.xml MyClass.java
         </source>
         Official configuration files:
         <a href="https://raw.githubusercontent.com/checkstyle/checkstyle/master/sun_checks.xml">sun_checks.xml</a>
@@ -120,7 +121,7 @@ mvn clean compile
         Run validation with arguments:
         <source>
 mvn exec:java -Dexec.mainClass="com.puppycrawl.tools.checkstyle.Main" \
-              -Dexec.args="-c sun_checks.xml -r src/main/java "
+              -Dexec.args="-c /sun_checks.xml -r src/main/java "
         </source>
         Run UI application for file :
         <source>