Fix for #116 added abbrevLength to Readme and pom example config

Author: S L

README.md

@@ -200,6 +200,16 @@ It's really simple to setup this plugin; below is a sample pom that you may base
                         -->
                         <forceLongFormat>false</forceLongFormat>
                     </gitDescribe>
+
+					<!-- @since 2.1.1 -->
+					<!--
+                         how many chars should be displayed as the commit object id? 
+                         7 is git's default, 
+                         0 has a special meaning (see end of this README.md), 
+                         and 40 is the maximum value here
+                         HINT: controls the property git.commit.id.abbrev
+                     -->
+					<abbrevLength>7</abbrevLength>
                 </configuration>
 
             </plugin>

pom.xml

@@ -221,7 +221,8 @@
             <!--<dirty>-DEVEL</dirty>-->
             <!--<forceLongFormat>false</forceLongFormat>-->
           <!--</gitDescribe>-->
-
+		
+		  <!--<abbrevLength>7</abbrevLength>-->
         <!--</configuration>-->
       <!--</plugin>-->