Reordered, updated, and improved the README.
Reordered, updated, and improved the README.

jcrist/pydy,jcrist/pydy,jcrist/pydy,skidzo/pydy,oliverlee/pydy,jcrist/pydy,oliverlee/pydy,jcrist/pydy,oliverlee/pydy,Shekharrajak/pydy,jcrist/pydy,Shekharrajak/pydy,skidzo/pydy,Shekharrajak/pydy,skidzo/pydy,skidzo/pydy,Shekharrajak/pydy,jcrist/pydy