fix(grunt): Make getVersion() work on travis

lib/grunt/utils.js

@@ -194,10 +194,28 @@ var util = module.exports = {
   getVersion: function() {
     // Get the current git tag
     // var version = shell.exec('git describe', {silent:true}).output.trim();
-    var version = shell.exec('git rev-list --all --max-count=1 | xargs git describe', {silent:true}).output.trim();
 
-    // Clean up the tag
+    // Try to get a tag for the current version
+    var out = shell.exec('git rev-list --all --max-count=1 | xargs git describe', {silent:true});
+
+    var version;
+
+    // If there's a tag on this commit, use it
+    if (out.code == 0) {
+      version = out.output.trim();
+    }
+    // ...otherwise, get the most recent stable tag
+    else {
+      version = shell.exec('git rev-list --tags --max-count=1 | xargs git describe', {silent:true}).output.trim();
+
+      // Append the commit hash suffix
+      var hash = shell.exec('git describe --always', {silent:true}).output.trim();
+      version = version + '-' + hash;
+    }
+
+    // Clean up the tag (git describe --long comes out as: v1.0.0-123-a78fda, need to remove the middle part though with the above commands we should not have the build number)
     var tag = version.replace(/-\d+-/, '-');
+
     tag = semver.clean(tag);
 
     return tag;