remove sed command

Author: jcai

Makefile

@@ -43,7 +43,6 @@ version:
 	&& git add VERSION \
     && mvn versions:set -DnewVersion=$${newVersion} \
     && mvn versions:commit \
-    && sed -i '' 's/<tag>HEAD<\/tag>/<tag>$${newVersion}<\/tag>/' pom.xml \
 	&& git commit -a -m "Release $${newVersion}" > /dev/null \
 	&& git tag "$${newVersion}" \
 	&& echo "Bumped version to $${newVersion}" \

pom.xml

@@ -431,7 +431,7 @@
     <url>https://github.com/wechaty/scala-wechaty</url>
     <connection>scm:git:ssh://github.com/wechaty/scala-wechaty.git</connection>
     <developerConnection>scm:git:ssh://[email protected]/wechaty/scala-wechaty.git</developerConnection>
-    <tag>${newVersion}</tag>
+    <tag>HEAD</tag>
   </scm>
   <properties>
     <encoding>UTF-8</encoding>