Added work in progress test for Ammonia.
Added work in progress test for Ammonia.

Wanted to test ammonia to see that lone pair saturation doesn't
saturate ammonia which is neutral.. However the R group for nitrogen
does not have data.

pierrelb/RMG-Py,nickvandewiele/RMG-Py,enochd/RMG-Py,enochd/RMG-Py,chatelak/RMG-Py,nickvandewiele/RMG-Py,chatelak/RMG-Py,nyee/RMG-Py,pierrelb/RMG-Py,nyee/RMG-Py