add automatic check for new version of SET and display warning is using out of date SET version

readme/CHANGELOG

@@ -11,6 +11,7 @@ version 7.2
 * added ability to add your own attachments via mass mailer attack vector
 * added new config option called wget_deep and incremented config to 7.2 - this will allow 1 deep download wgets
 * added ability to select on deeper wgets through web cloner in the web attack vectors - this will allow you to clone the site and not just the index.html which might be better.. to enable this edit /etc/setoolkit/set.config and turn WGET_DEEP to on.
+* added a new check upon startup (which may delay the start of set for a couple seconds, but it will check to see if there is a new version of SET available for you automatically - this is displayed on the main launcher UI when you first start SET
 
 ~~~~~~~~~~~~~~~~
 version 7.1.2

src/core/setcore.py

@@ -17,6 +17,7 @@ import base64
 from src.core import dictionaries
 import io
 import trace
+import urllib2
 
 if sys.version_info >= (3, 0):
     # python 3 removes reduce from builtin and into functools
@@ -906,6 +907,24 @@ def show_banner(define_version, graphic):
           bcolors.GREEN + """https://www.trustedsec.com\n""" + bcolors.ENDC)
 
 
+    # here we check if  there is a new version of SET - if there is, then display a banner
+    cv = get_version()
+
+    # pull version
+    try: 
+        response = urllib2.urlopen('https://raw.githubusercontent.com/trustedsec/social-engineer-toolkit/master/src/core/setcore.py')
+        setcheck = response.readlines()
+        for line in setcheck:
+            line = line.rstrip()
+            if "define_version =" in line:
+		# define_version = '7.1.2'
+                version = line.replace("define_version = ", "").replace("'", "", 2).replace("    ", "")
+                   
+        if cv != version:
+		print(bcolors.RED + "          There is a new version of SET available.\n                    " + bcolors.GREEN + " Your version: " + bcolors.RED + cv + bcolors.GREEN + "\n                  Current version: " + bcolors.ENDC + bcolors.BOLD + version + bcolors.YELLOW + "\n\nPlease update SET to the latest before submitting any git issues.\n\n" + bcolors.ENDC)
+    except Exception as err:
+	print err
+
 def show_graphic():
     menu = random.randrange(2, 14)
     if menu == 2: