Docs related to running in production. (#174)

* Fixed up api.md, removed Titan references.

* Adding more documentation on running in production.

* Update deps for ironmq.

docs/databases/README.md

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+
+# Databases
+
+We currently support the following databases and they are passed in via the `DB` environment variable. For example:
+
+```sh
+docker run -e "DB=postgres://user:pass@localhost:6212/mydb" ...
+```
+
+## [Bolt](https://github.com/boltdb/bolt) (default)
+
+URL: `bolt:///functions/data/functions.db`
+
+Bolt is an embedded database which stores to disk. If you want to use this, be sure you don't lose the data directory by mounting
+the directory on your host. eg: `docker run -v $PWD/data:/functions/data -e DB=bolt:///functions/data/bolt.db ...`
+
+[More on BoltDB](databases/boltdb.md)
+
+## [Redis](http://redis.io/)
+
+URL: `redis://localhost:6379/`
+
+Use a Redis instance as your database. Be sure to enable [peristence](http://redis.io/topics/persistence).
+
+[More on Redis](databases/redis.md)
+
+## [PostgreSQL](http://www.postgresql.org/)
+
+URL: `postgres://user123:pass456@ec2-117-21-174-214.compute-1.amazonaws.com:6212/db982398`
+
+Use a PostgreSQL database. If you're using IronFunctions in production, you should probably start here.
+
+[More on Postgres](databases/postgres.md)
+
+## What about database X?
+
+We're happy to add more and we love pull requests, so feel free to add one! Copy one of the implementations above as a starting point. 
+

docs/databases/boltdb.md

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+# IronFunctions using BoltDB
+
+BoltDB is the default database, you just need to run the API.
+
+## Persistent
+
+To keep it persistent, add a volume flag to the command:
+
+```
+docker run --rm -it --privileged -v $PWD/bolt.db:/app/bolt.db -p 8080:8080 iron/functions
+```

docs/databases/postgres.md

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+# IronFunctions using Postgres
+
+Let's presuppose you don't have even a postgres DB ready.
+
+### 1. Let's start a postgres instance:
+
+```
+docker run --name iron-postgres \
+        -e POSTGRES_PASSWORD=ironfunctions -d postgres
+``` 
+
+### 2. Now let's create a new database to IronFunctions
+
+Creating database:
+
+```
+docker run -it --rm --link iron-postgres:postgres postgres \
+    psql -h postgres -U postgres -c "CREATE DATABASE funcs;"
+```
+
+Granting access to postgres user
+
+```
+docker run -it --rm --link iron-postgres:postgres postgres \
+    psql -h postgres -U postgres -c 'GRANT ALL PRIVILEGES ON DATABASE funcs TO postgres;'
+```
+
+### 3. Now let's start IronFunctions connecting to our new postgres instance
+
+```
+docker run --rm --link "iron-postgres:postgres" \
+    -e "DB=postgres://postgres:ironfunctions@postgres/funcs?sslmode=disable" \
+    -it -p 8080:8080 iron/functions
+```