Added author

semncg.py

@@ -11,7 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""Sem-NCG metric"""
+"""
+Sem-NCG metric
+Author: Naman Bansal
+"""
 
 import statistics
 from dataclasses import dataclass