updated installation instructions
updated installation instructions

graycatlabs/PyBBIO,leftbrainstrain/PyBBIO,ims-tyler/PyBBIO,ims-tyler/PyBBIO,leftbrainstrain/PyBBIO,leftbrainstrain/PyBBIO,ims-tyler/PyBBIO,graycatlabs/PyBBIO,graycatlabs/PyBBIO,graycatlabs/PyBBIO,graycatlabs/PyBBIO,ims-tyler/PyBBIO,ims-tyler/PyBBIO,leftbrainstrain/PyBBIO,leftbrainstrain/PyBBIO