Merge pull request #11 from ncats/update_pom_lh

update pom for maven deployment

pom.xml

@@ -7,6 +7,7 @@
   <version>0.0.15</version>
   <name>structure-indexer</name>
   <url>https://github.com/ncats/structure-indexer</url>
+  <description>This is a self-contained structure indexer that uses Lucene as the underlying storage and indexing engine.</description>
 
   <properties>
         <lucene.version>5.5.0</lucene.version>
@@ -57,6 +58,10 @@
     </developer>
   </developers>
 
+  <scm>
+    <url>https://github.com/ncats/structure-indexer.git</url>
+  </scm>
+
   <distributionManagement>
     <snapshotRepository>
       <id>ossrh</id>
@@ -153,7 +158,7 @@
           <plugin>
             <groupId>org.sonatype.plugins</groupId>
             <artifactId>nexus-staging-maven-plugin</artifactId>
-            <version>1.6.7</version>
+            <version>1.6.13</version>
             <extensions>true</extensions>
             <configuration>
               <serverId>ossrh</serverId>
@@ -164,7 +169,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-gpg-plugin</artifactId>
-            <version>1.6</version>
+            <version>3.1.0</version>
             <executions>
               <execution>
                 <id>sign-artifacts</id>