Merge pull request SimVascular#6 from zasexton/fixing-minor-error-in-…

…import-syntax

removed "is" from element checking condition

PythonAPI/Importing/install.py

@@ -47,7 +47,7 @@ def install(package_name,version=None,inequality=None):
  return False
  # Checking logical package constraints (if applicable)
  if inequality is not None:
- if inequality is not in ['==','<','>','<=','>=']:
+ if inequality not in ['==','<','>','<=','>=']:
  print('inequality must be one of the following: == < > <= >=')
  return False
  if version is None: