get rid of compiler warnings

fixed a few compilation issues on modern systems

Merge pull request #2 from df-cryptostorm/patch-1

Update netmap github repo

updated README with explanation of all the supported options

ignore VIM swap files and exuberant ctags data file

keep track of active connections and display info on them when timing out

added IP ID, IP TTL, TCP Window setting options

added entry to TODO and ignore some cruft

first commit