fixing test.
moving app code to nit/app whilst having bin/nit as a pure runner.
remove all unnecessary requires.
correct file permissions.
adding .nit to .gitignore.
extracting tests to separate files and fix all tests by copying the fixture .git dir.
adding #index_renderer= for now.
use "old" index_renderer and indexer in status test for now.
adding Thorfile so we can manually install nit.
correct gemspec.
moving Files to separate file.
fix CharIndexer so "abc" gets correctly evaluated in #list.