add copyright

app/src/main/java/org/thousandsmiles/tscharts_lib/TrustedSSLSocketFactory.java

@@ -1,3 +1,22 @@
+/*
+ * (C) Copyright Syd Logan 2018
+ * (C) Copyright Thousand Smiles Foundation 2018
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ *
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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.
+ */
+
+/* based on https://stackoverflow.com/questions/28191023/ssl-pinning-with-volley-network-library-on-android */
+
 package org.thousandsmiles.tscharts_lib;
 
 import android.content.Context;