Output more helpfull data about whats been generated in build

[astubbs]

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AssertJ assertions generation report
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--- Generator input parameters ---

Generating AssertJ assertions for classes in following packages and subpackages:
blah

Generating AssertJ assertions for classes:
blah

--- Generator results ---

Directory where custom assertions files have been generated:
blah

Custom assertions files generated:
blah

Assertions entry point class has been generated in file:
blah

[astubbs]

See the new Result class in:

• Fix class loading in plugin, large refactors, optional unwrapping, standard subjects exteding, more options, java 8 #72