OPS-676: Custom modules should have docs about why they changed

playbooks/library/ec2_tag_local

@@ -14,6 +14,8 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
+# edX: Edited to allow for variable tag names
+
 DOCUMENTATION = '''
 ---
 module: ec2_tag 
@@ -166,4 +168,4 @@ def main():
 from ansible.module_utils.basic import *
 from ansible.module_utils.ec2 import *
 
-main()
\ No newline at end of file
+main()