Ensure this works if your PWD has spaces.
Fixes some log issues mentioned in #42. In particular, you couldn't use a custom log folder if BATCH_MODE=yes was set. So you can now set:

    LOG_FOLDER="__DOCUMENT_ROOT__/logs"

In your `~/.virtualhost.sh.conf` file, and `__DOCUMENT_ROOT__` will get substituted for the document root you've picked. Note that this requires a Ruby runtime, which should be already satisfied on any Mac OS X platform. sed wizards are welcome to submit a PR to remove this requirement.
Assume Y for the Rails/Symphony detection when in BATCH_MODE. Closes #42.
Use Ruby's File.expand_path to resolve relative paths in the LOG_FOLDER. For example,

    LOG_FOLDER="__DOCUMENT_ROOT__/../logs"
Perform a more thorough validation of the virtual host name. Closed #45.
Strip the trailing slash that the shell might add because of tab completion. Closes #45.
Version bump.
Merge pull request #43 from pgib/affirmative-defaults

BATCH_MODE and other minor fixes