Updated contribution instructions
Added stub for installing Oracle XE in the VM
add NCLOB datatype to Java implementation (fixes #14)
removing the old dotnet impl as it will be replaced by fitsharp (#8)
bumping version to 2.0.0-RC2, bumping fitnesse version

unfortunately the snapshot fitnesse releases don't get pushed to the mvn repository,
meaning that the jar and POM file have to be installed by hand. This needs to be
automated/scripted somehow.

This commit fixes #6.
packaging fitsharp 2.2 (closes #8)
Move DbFit pages to sub-wiki
Alter unit tests to refer to moved pages