Added README file to describe and explain

README.md

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+SLACK BIBLE BOT
+==================
+
+Setting this up with [Slack](https://slack.com/) is simple.
+
+In your "Integration Settings" add an **Outgoing WebHooks** entry with these parameters:
+
+  - Channel : Up to your discretion.  It is highly recommended you limit to a specific channel.  If you are not quite sure just choose '#random'.
+  - Trigger Word(s) : In this version the only words that will be recognized are 'bible','gospel,'scripture'.  Based on recommendations (Pull Requests) there may be more added later.
+  - URL(s) : this **must be** 'https://disciplr.herokuapp.com/bible'.  This, again, is likely to change in future releases but I expect to maintain backward-compatibility.
+  - Token : This should be unchanged and can be ignored
+  - Descriptive Label : This is also up to your discretion but I recommend 'Bible Verse Expert'
+  - Customize Name : 'god'
+  - Customize Icon : I _really_ like the 'church' icon
+
+Click "Save Settings" and you are ready to go.
+
+![Integration Settings](integration_settings.png?raw=true)
+
+![Chuch Emoji](church_emoji.png?raw=true)
+
+In [Slack](https://slack.com/) you simply type something like `bible John 3:16` and will get a response like this
+
+![John 3:16](bible_verse.png?raw=true)
+
+---
+
+Acknowledgement and thanks to [GetBible.net](http://getbible.net/api) for their API that provides the scripture.  I have built this in a modular fashion, though, in order to allow *other* sources if desired.