update changelog
more user friendly information about hard/soft-link
when building packages on Linux, use RPATH
minor update in docs
ignore packaged apps on OSX
Begin to add ability to install from pypi
Begin to add logic to install from pypi.
Revert from_pypi logic.
Fix logic in main_install for handling multiple packages at a time.
 fix root_dir for conda.config under pythonw mode on mac os x; finish first draft of install_from_pypi command
First light on working conda install from pypi packages.
Add ability to build from spec with recipe in <root>/conda-recipes
Add pip install and make install from pypi optional.
Add pip installed packages to conda list.
Add conda-reciepes and .app paths on Mac to list of files to ignore in tracking.