Minor cleanup in some of the shell scripts in the "tools" directory.
No functional changes.

 * Description header formatting
 * Added missing new line at the end of a file
 * Removed extra new lines at the end of a file
diff --git a/tools/build/onos-build b/tools/build/onos-build
index decf892..cf2ebe4 100755
--- a/tools/build/onos-build
+++ b/tools/build/onos-build
@@ -1,10 +1,10 @@
 #!/bin/bash
-#-------------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
 # Builds the ONOS from source.
-#-------------------------------------------------------------------------------
+# -----------------------------------------------------------------------------
 
 [ ! -d "$ONOS_ROOT" ] && echo "ONOS_ROOT is not defined" >&2 && exit 1
 . $ONOS_ROOT/tools/build/envDefaults
 
 cd $ONOS_ROOT
-mvn clean install && mvn javadoc:aggregate
\ No newline at end of file
+mvn clean install && mvn javadoc:aggregate