Merge pull request #1274 from kevinburke/building-link

Link to 'Building Jenkins' page from text file

BUILDING.TXT

-If you want simply to have the jenkins.war as fast as possible (without test execution), just use :
-mvn clean install -pl war -am -DskipTests
-the war will be in war/target/jenkins.war (you can play with it)
+If you want simply to have the jenkins.war as fast as possible (without test
+execution), run:
+
+    mvn clean install -pl war -am -DskipTests
+
+The WAR file will be in war/target/jenkins.war (you can play with it)
 You can deactivate test-harness execution with -Dskip-test-harness
-Have Fun !!
 
+For more information on building Jenkins, visit
+https://wiki.jenkins-ci.org/display/JENKINS/Building+Jenkins
+
+Have Fun !!