0.1.beta.8

add more examples for frame_iter and other small stuff

wget https://github.com/pytraj/pytraj/archive/0.1.beta.8.tar.gz
tar -xf 0.1.beta.8.tar.gz
cd pytraj*
python setup.py install

0.1.beta.7

smarter build

wget https://github.com/pytraj/pytraj/archive/0.1.beta.7.tar.gz
tar -xf 0.1.beta.7.tar.gz
cd pytraj*
python setup.py install