Add support for Metasploit Framework console output

AUTHORS.en.txt

@@ -252,3 +252,4 @@ Contributors:
 - Nicolas LLOBERA <nllobera@gmail.com>
 - Morten Piibeleht <morten.piibeleht@gmail.com>
 - Martin Clausen <martin.clausene@gmail.com>
+- Tod Beardsley <tod_beardsley@rapid7.com>

src/languages/metasploit.js

@@ -0,0 +1,34 @@
+/*
+Language: Metasploit Framework Session
+Author: Tod Beardsley <tod_beardsley@rapid.com>
+Category: common
+Description: Metasploit Framework is an open source penetration testing framework, available at https://metasploit.com
+*/
+
+function(hljs) {
+  return {
+    aliases: ['msf'],
+    case_insensitive: false,
+    keywords: {
+      keyword: 'msf|10',
+      nomarkup: 'exploit auxiliary post nop encoder' // Helps classification
+    },
+    contains: [
+      {
+        className: 'strong',
+        begin: '^\\[\\*\\]', end: ' ',
+        relevance: 10
+      },
+      {
+        className: 'literal',
+        begin: '^\\[\\+\\]', end: ' ',
+        relevance: 10
+      },
+      {
+        className: 'number',
+        begin: '^\\[[-!]\\]', end: ' ',
+        relevance: 10
+      },
+    ]
+  }
+}

test/detect/metasploit/default.txt

@@ -0,0 +1,13 @@
+msf auxiliary(http_version) > rerun
+[*] Reloading module...
+
+[*] This is status!
+[+] This is good!
+[-] This is bad!
+[-] This is error!
+[!] This is warning!
+[*] Scanned 1 of 1 hosts (100% complete)
+[*] Auxiliary module execution completed
+msf auxiliary(http_version) > use exploit/windows/smb/ms08_067_netapi 
+msf exploit(ms08_067_netapi) > 
+