exclusion
un-tar, add README.md as placeholder to each directory that was empty

- minimal project via exclusion list
- expand tests
rename README to README.md
prepend project title as level-1 header
fix title for create.project('.')
populate README files with contents from webpage
allow non-R files in tests directory
rewrite test to test for creation of README.md files
update NEWS
Merge branch 'master' into 128-readme
edit NEWS
Merge pull request #129 from johnmyleswhite/128-readme

Create README.md files in each subdirectory