Updated pom file

Hello. I came across your starter template and found it very helpful in getting Railo up and running on Heroku. I develop on Windows machines and noticed several build warnings using the most recent version of Maven. I have cleared up all build warnings and added in the drivers for MySQL and PostgreSQL. 

I've tested MySQL datasources with the ClearDB addon (https://addons.heroku.com/cleardb) and had great success. Unfortunately, until Railo allows an option for secure connections in PostgreSQL datasources it's a bit of a bear to set up (but it is possible and a light enough dependency).

I also updated the Railo version to 4.1.0.010. As my commit notes, when I tried .011 (which is the current RC version right now) I was presented with the update JARs message in the Railo admin. On principal it seemed like the version shouldn't start with a necessary upgrade. Updating to version 0.11 happens flawlessly without any need for JAR updates should the user decide to (plus there will be a final version soon for 4.1 and the pom can be updated again then).

I plan to write some further documentation on setting up the datasource locally to connect to the ClearDB database so it's available upon deploy. I've also used the Mandrill addon (https://addons.heroku.com/mandrill) by adding the appropriate connection into to the default mail settings locally. I had good luck with setting up S3 mappings to use for file operations as well. 

Lastly, I have found Foreman to be finicky on Windows. I've had it set up and running with no fuss on some machines and no very little luck on others (following the same setup instructions). As such, I just moved the java command into a batch file to run on Windows. It assume Java is in your PATH environment variable and Ctrl+C will kill the server when done using it.

Thanks again for your work, it helped a lot. I hope you find these quick updates useful.