Update convertmodis.py
Update parsemodis.py

let user chose a custom boundary
Merge pull request #3 from stanfe/patch-2

commit pull request of stanfe in parsemodis.py to let user chose a custom boundary
Merge pull request #2 from stanfe/patch-1

fix bug returns 0 if false and 1 if true so != -1 is always true thanks to stanfe
check if the bound variable is a dictionary with the right keys