Changed the formatting of the objid option for point regions

Added some decimal places so that redshifts could be used instead of just objid's
Merge branch 'master' of https://github.com/MCTwo/MCCutils

# By Karen Yin-Yee Ng
# Via Karen Yin-Yee Ng
* 'master' of https://github.com/MCTwo/MCCutils:
  bug fix
  added file
  Fixed error due to multiplying 1e14 at the wrong place
  trying to fix nfwparam so it works correctly with 1e14 Msun as unit for M200
  Fixed the B200 parameter to use the correct value from Duffy et al.