Added few more smtplib python script file.
 -sendEmail.py uses the local MTA
 -GmailSendEmail.py uses gmail's SMTP server and sends emails.
 -YahooSendEmail.py uses Yahoo's SMTP server and sends emails.
 -SendEmailWithAttachemet uses gmail's SMTP and sends email with attachments.
Added some more improvements in githubTest.py.
  -now it is more robust and handle various condition smartly.