Updated kaliinstall.sh

Fixed UTF-8 Quotes vs standard quotes.. Also fixed echo vs printf... echo doesn't honor \n.
Update kaliinstall.sh

Derp.. Typo.
Update kaliinstall.sh

Adding libpcap-dev install and pcaprub install...
Merge pull request #2 from essobi/master

Fixing kaliinstall.sh.... (Congrats for the first pull request!)