Update license information

Author: brunexgeek

examples/client.c

@@ -1,3 +1,20 @@
+/*
+ *   Copyright 2020 Bruno Ribeiro
+ *   <https://github.com/brunexgeek/webster>
+ *
+ *   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.
+ */
+
 #include <webster.h>
 #include <stdio.h>
 

examples/echo.c

@@ -1,3 +1,20 @@
+/*
+ *   Copyright 2020 Bruno Ribeiro
+ *   <https://github.com/brunexgeek/webster>
+ *
+ *   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.
+ */
+
 #include <webster.h>
 #include <limits.h>
 #include <stdio.h>

examples/indexing.c

@@ -1,3 +1,20 @@
+/*
+ *   Copyright 2020 Bruno Ribeiro
+ *   <https://github.com/brunexgeek/webster>
+ *
+ *   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.
+ */
+
 #include <webster.h>
 #include <limits.h>
 #include <stdio.h>

webster.c

@@ -1,5 +1,5 @@
 /*
- *   Copyright 2019 Bruno Ribeiro
+ *   Copyright 2020 Bruno Ribeiro
  *   <https://github.com/brunexgeek/webster>
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");

webster.h

@@ -1,5 +1,5 @@
 /*
- *   Copyright 2019 Bruno Ribeiro
+ *   Copyright 2020 Bruno Ribeiro
  *   <https://github.com/brunexgeek/webster>
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");