Added docker-examples and README for dockerization

docker-examples/README.md

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+# Running Kutt in Docker
+
+Assumptions:
+The domain in this example is `kutt.local`. This needs to be configured in your hosts file for this example to work _as written_. You should, of course, modify this domain to suit your needs. 
+
+### Configure Kutt
+
+server/config.js
+```
+module.exports = {
+
+	PORT: process.env.KUTT_PORT, # Or whatever you want to name the env var
+    
+    /* The domain that this website is on */
+    DEFAULT_DOMAIN: process.env.KUTT_DOMAIN, # Or whatever..
+    
+    ...
+    
+}
+```
+
+### Neo4j in a container
+
+You can run neo4j in a container and link it to the kutt container in Docker. 
+
+Properly installing and running neo4j is outside of the scope of this document. But here's a simple one-liner to get neo4j running on docker for dev/test:
+
+```
+docker run \
+    --publish=7474:7474 --publish=7687:7687 \
+    --name neo4j \
+    neo4j
+```
+**This is not a production-ready setup. There is no data persistence, nor proper security. Use for test/dev only.**
+
+Then, configure Kutt:
+server/config.js
+```
+...
+/* Neo4j database credential details */
+DB_URI: 'bolt://neo4j',
+DB_USERNAME: 'neo4j', # Or pass this in via env var as before 
+DB_PASSWORD: 'neo4j', # Or via env var..
+...
+```
+
+Once you have neo4j running in a container, you'll link your Kutt container to it. This will be documented below.
+
+### Build Kutt Image
+
+First you'll need to build Kutt.
+From the root directory of Kutt, execute the following:
+`docker build -t kutt .`
+
+### Run Kutt
+
+Once you've built the image, then all that is left to do is run Kutt.
+
+`docker run -d -p80:3000 -e KUTT_PORT=3000 -e KUTT_DOMAIN=kutt.local --link=neo4j kutt`
+
+Direct your browser to http://kutt.local/ and begin kutting URLs!

docker-examples/server-config.example.js

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+module.exports = {
+  PORT: process.env.KUTT_PORT,
+
+  /* The domain that this website is on */
+  DEFAULT_DOMAIN: process.env.KUTT_DOMAIN,
+
+  /* Neo4j database credential details */
+  DB_URI: 'bolt://localhost',
+  DB_USERNAME: '',
+  DB_PASSWORD: '',
+
+  /* A passphrase to encrypt JWT. Use a long and secure key. */
+  JWT_SECRET: 'securekey',
+
+  /*
+    Invisible reCaptcha secret key
+    Create one in https://www.google.com/recaptcha/intro/
+  */
+  RECAPTCHA_SECRET_KEY: '',
+
+  /*
+    Your email host details to use to send verification emails.
+    More info on http://nodemailer.com/
+  */
+  MAIL_HOST: '',
+  MAIL_PORT: 587,
+  MAIL_SECURE: false,
+  MAIL_USER: '',
+  MAIL_PASSWORD: '',
+};