simple verbose printing
added head operation to local_bundle_client
fixed irregularity in readFile
fixed percy's comments
added comments to verbose output section
info always prints parents
added remote client command
Merge pull request #13 from kovach/verbose

Verbose
Add getppid on Windows
Merge branch 'master' of https://github.com/cpoulain/codalab-cli
Merge branch 'master' of https://github.com/codalab/codalab-cli
Merge pull request #20 from cpoulain/master

Add getppid on Windows.
Add support for worksheet directives
Merge pull request #21 from javierluraschi/WorksheetDirectives

Add support for worksheet directives
Validate file system access by bundle
Resolve merge conflict
Remove unwanted file.
Merge branch 'ValidatePaths' of https://github.com/javierluraschi/codalab-cli into review
Validate access to bundle files
merge & print partial progress on copying files