lab2 skeleton

- skeleton README.txt
- main() for twecho
Skeleton files for lab3

  - README.txt, mylist.h, mylist-test.c, mylist-test-output.txt
Updated README.txt for completed part 1.
Added part1 folder.
Updated README
Finalized part1 folder
Added Makefile.
Added DuplicateArgs.
Finished DuplicateArgs function.
Fixed Makefile.
Added freeduplicateargs function.
Added valgrindoutput file.
Added to readme for part 2.
Added part1 again
added solutions
Lab 4 skeleton
Added Makefile.
Added mylist.c.
Added addFront and traverseList methods.
Added flipSignDouble.