Added Map parameter

Author: derNiklaas

src/main/java/org/codeoverflow/chatoverflow/api/io/parameter/MapParameter.java

@@ -0,0 +1,12 @@
+package org.codeoverflow.chatoverflow.api.io.parameter;
+
+import org.codeoverflow.chatoverflow.api.IsRequirement;
+
+import java.util.Map;
+
+/**
+ * A {@link Parameter} that is a Map<String, String>
+ */
+@IsRequirement
+public interface MapParameter extends Parameter<Map<String, String>> {
+}