Create NDA.js

Provides a response to the strings that will cause the `Summarize the thread so far` parser to not produce a summary.

Parsers/NDA.js

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+/*
+activation_example:!nda
+regex:(!nda|!confidential)
+flags:gmi
+*/
+
+//Provides a response to the strings that will cause the `Summarize the thread so far` parser to not produce a summary.
+
+var message = []; //Array of potential messages to respond with
+message.push(":zipper_mouth_face:");
+message.push(":shushing_face:");
+message.push("I got you :fingerguns:");
+message.push("Lips are sealed");
+message.push(":spill-the-tea:");
+message.push(":popcorn2:");
+message.push(":speak_no_evil:");
+message.push("Request for confidentiality acknowledged. Use of !summary, !catchmeup, and !catchup have been disabled.");
+
+
+//Select one at random.
+var randomIndex = Math.floor(Math.random() * message.length);
+
+new x_snc_slackerbot.Slacker().send_chat(current, message[randomIndex], true);