Initial commit of Boore et al 1997 GMPE
Merge branch 'master' into bjf1997_gmpe
Merges upstream changes, adds docs, pep8 fixes
Boore et al (1997) GMPE now passes tests
Fixes error in doc. Corrects docstrings in some functions
Changes class names, fixes divide by 0 on tests
Minor fixes to address review comments
Merge pull request #148 from g-weatherill/bjf1997_gmpe

Implements the Boore, Joyner & Fumal (1997) GMPE
Merge pull request #149 from monellid/ab1995

Atkinson and Boore 1995 GMPE
Rx distance calculator takes now into account curvature in rupture top edge
optimized version of Rx distance calculator for planar surfaces
removed uneeded file
Merge pull request #150 from monellid/fix-rx

Make Rx Distance calculation working properly with complex geometries
added upper and lower limit cases for atkinson and boore 1995 GMPE
updated documentation