Write article on coding standards / best practices

Some ideas to be written down:

1. "private final" on fields
2. "final" on method parameters
3. use private on methods wherever possible and if in doubt; use final on methods wherever possible
4. avoid "static" wherever possible
5. Code formatting: Eclipse default but 160(?) caracters long
6. Comments and well organized code
7. Code visually pleasant to be read
8. License, copyrights
9. FastUtil: how to use it wisely
10. @ReadOnly to the receiver (equivalent to "const" return type)
11. JSR-308 annotations in general
12. Porting templates to generics (techniques)
13. Use primitive types wherever possible
14. solving issues pointed out by PMD and FindBugs
15. ???

Open discussion:
a. paralellism
b. colt .vs. parallel colt
c. ???

Colt and Fastutil were removed from JQuantLib.

duplicated of issue #182

I've reviewed the [initial] list of everything we need to document
http://bugs.jquantlib.org/view.php?id=182