Logs support.

Added /logs endpoint with basic logger and LoggerAdapter.

src/Adapters/Logger/LoggerAdapter.js

@@ -0,0 +1,17 @@
+// Logger Adapter
+//
+// Allows you to change the logger mechanism
+//
+// Adapter classes must implement the following functions:
+// * info(obj1 [, obj2, .., objN])
+// * error(obj1 [, obj2, .., objN])
+// * query(options, callback)
+// Default is FileLoggerAdapter.js
+
+export class LoggerAdapter {
+  info() {}
+  error() {}
+  query(options, callback) {}
+}
+
+export default LoggerAdapter;