Added perldoc and test files. 

Added Changes, README.
Added perldoc to lib/Module/Build/PIT.pm and script/run_lib_tests.pl.
Added default test files for 'use' and 'new'.
Added tests available only when AUTHOR_TESTS=1: 
- boilerplate check.
- Test::Pod::Coverage and Pod::Coverage tests
- Test::Pod checks.
- Test::Perl::Critic checks. 
- Test::Kwalitee metrics. 
- Test::Strict checks. 
- Detect use of 'no_plan'.

Incremented VERSION to 0.002.