Create super_basic_multiple_model_PDB_file_splitter.py

Takes a formatted pdb file with multiple models and splits each model  into individual files. Requires the PDB file include both MODEL and ENDMDL records for each of the models.
You must paste  your PDB file text into 'USER ADJUSTABLE VALUES'  where it says 
'''
PDB_text = '''
PASTE YOUR PDB FILE TEXT HERE
'''
'''