search: Align the search output nicely

Fixes #31.
Fixes #37.

Signed-off-by: Asias He <asias@cloudius-systems.com>
Merge pull request #51 from asias/fix

search: Align the search output nicely
Fix grammar mistakes

We were using every article possible with word "repository" in the
output of capstan -h:

   push		push an image to a repository
   pull		pull an image to the repository
   rmi		delete an image from an repository

Also, it should be "pull ... from". I consulted this with Don.
Merge pull request #52 from tgrabiec/fixes

Fix grammar mistakes
vmw: Support VMWare on windows

Signed-off-by: Asias He <asias@cloudius-systems.com>