code: function(directory) {
      var git, gitRef, packagePath, packageInfos;
      packagePath = path.join(directory, "package.json");
      
      // Check directory is a git repository
      return Q.nfcall(exec, "cd "+directory+" && git config --get remote.origin.url").then(function(output) {
          git = output.join("").replace(/(\r\n|\n|\r)/gm, "");
          
          // Check package.json exists
          if (!fs.existsSync(packagePath)) {
              return Q.reject(new Error("package.json not found"));
          } else {
              return Q();
          }
      }).then(function() {
          // Read current commit
          return Q.nfcall(exec, "cd "+directory+" && git rev-parse HEAD").then(function(output) {
              gitRef = output.join("").replace(/(\r\n|\n|\r)/gm, "");
          });
      }).then(function() {
          // Read package.json
          return Q.nfcall(fs.readFile, packagePath, 'utf8');
      }).then(function(output) {
          packageInfos = JSON.parse(output);
          return Q({
              'git': git+"#"+gitRef,
              'package': packageInfos
          });
      });
  }
docs: Return package info for addons