Update linkedmatrix.py

testcase requires the dimensions
add initializing dimensions to template
Update linkedmatrix.py
added some constructor info
Update README.md
Update README.md
fixed issue with self in function signatures

template didn't run for a while. it was fixed in one insert function but
not another.
Update README.md
added city list
add A4
added dummy README
a working test case _and_ a working spec?!
check type of length
now tests large and small dictionaries

- "large" dictionaries shouldn't collide too much
- "small" dictionaries collide a lot as a rule
changed large test cases to use str keys
add hashtable template
Update README.md
Update README.md
Update README.md
added assignment 1