ls and completion sort of working
clean up autocomplete
general cleanup
implement ls -a
implement ls -l
make ls print the global usage
fix some bugs in ls

 - flush files before the dir results
 - make sure we still filter cached readDir results
add rm [-r]
improve error handling
add mv [-fT]
add mkdir [-p]
add touch [-c]
clean up completion
add chmod [-R] and chown [-R]
add getopt to makefile
add get and getmerge [-n]
add cat and tail/head
add note to readme
Merge pull request #1 from colinmarc/cmd

Add an hdfs binary (wip)