add detection if internet connect is present or not

[berrisfordjohn]

only do remote calls when internet connection is present

[berrisfordjohn]

From Eugene

def have_internet ( self,url="www.google.com",time_out=5 ):
conn = httplib.HTTPConnection(url,timeout=time_out)
try:
conn.request("HEAD", "/")
conn.close()
return True
except:
conn.close()
return False