Forgot to send a pull request for the ackerman assert statments

Session 4 homework isn't done yet though. On a different note, I don't know why the python path after the hash bang isn't making it executable from my shell... any thoughts?
There seems to be a problem with the printing of a thank you.
```
What would you like to do?

        -type 'p' to print report
        -type 's' to send a thank you
        -type 'q' to quit
        -type 'd' to delete donor from list
: s
Would you like a list of current donors? (type 'list') or...
Enter a new donor name (full name) or...
Print thank you's for entire list? (type 'print all')
: Dan
And for what amount?
: 1
Would you like to print a thank you? (type 'y' for yes or 'n' for no)
: y
Traceback (most recent call last):
  File "foo.py", line 144, in <module>
    donor()
  File "foo.py", line 80, in donor
    printThankYou(donorName, donation)
  File "foo.py", line 85, in printThankYou
    firstname, lastname = name.split(" ")
ValueError: need more than 1 value to unpack
```