post release bump

Author: scotthernandez

build.xml

@@ -1,7 +1,7 @@
 <?xml version='1.0'?>
 <project name="MongoDB Java Driver" default="compile" basedir=".">
 
-  <property name="version" value="2.6.2"/>
+  <property name="version" value="2.7.0-pre"/>
   <property name="targetdir" location="target"/>
   <property name="testdir" location="${targetdir}/test"/>
   <dirname property="javabase" file="${java.home}"/>

src/main/META-INF/MANIFEST.MF

@@ -2,6 +2,6 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: MongoDB
 Bundle-SymbolicName: com.mongodb
-Bundle-Version: 2.6.2
+Bundle-Version: 2.7.0
 Import-Package: javax.management 
 Export-Package: com.mongodb, com.mongodb.io, com.mongodb.util, com.mongodb.gridfs, org.bson, org.bson.util, org.bson.types, org.bson.io