CHANGE fewer vm stats + remove counters + add graphite nc server
CHANGE add memory usage atoms + cleanup warnings unused variables
NEW configure vm_statistics/vm_memory
DOC cleanup Readme
DOC improved docs + Makefile
DOC reformat Readme
CHANGE now use shorthostname.nodename for vm stats + change vm to erlangvm in the graphite key
FIX dialyzer issues + added Dialyzer target to Makefile
CHANGE add stats for ports, change config keys
Merge pull request #2 from spilgames/custom

CHANGE many improvements to estatsd:
- fewer graphite stats (removing unused ones + only report interesting ones)
- keep old key structure for counters
- make stats configurable (enable and disable per item)