Added nmap support

.cheat/nmap

@@ -0,0 +1,33 @@
+Single target scan:
+nmap [target]
+
+Scan from a list of targets:
+nmap -iL [list.txt]
+
+iPv6:
+nmap -6 [target]
+
+OS detection:
+nmap -O [target]
+
+Save output to text file:
+nmap -oN [output.txt] [target]
+
+Save output to xml file:
+nmap -oX [output.xml] [target]
+
+Scan a specific port:
+nmap -source-port [port] [target]
+
+Do an aggressive scan:
+nmap -A [target]
+
+Traceroute:
+nmap -traceroute [target]
+
+Ping scan only: -sP
+Don't ping:     -PN
+TCP SYN ping:   -PS
+TCP ACK ping:   -PA
+UDP ping:       -PU
+ARP ping:       -PR