Simple shim which allows for using jscheck from jasmine

• Use jasmine test runner to run jscheck claims
• Use jasmine expect() matchers rather than jscheck verify()

Usage: (coffeescript)

forAll [JSC.integer(1,10)], 'integers from 1 to 10 should be positive', (arg) ->
    expect( arg ).toBeGreaterThan 0

The number of generated values to be tried can be set via this.reps, and will be passed to JSC.reps

Any suggestions for improvements / pull requests welcome, I'm a newcomer to both jasmine internals and jscheck.