Small change to correct a few typos in userAuth sample
Small change to correct a few typos in userAuth sample

1234-/Force.com-Toolkit-for-PHP,iFixit/Force.com-Toolkit-for-PHP,developerforce/Force.com-Toolkit-for-PHP,davispeixoto/Force.com-Toolkit-for-PHP,eddyzhuo/Force.com-Toolkit-for-PHP,eddyzhuo/Force.com-Toolkit-for-PHP,iFixit/Force.com-Toolkit-for-PHP,developerforce/Force.com-Toolkit-for-PHP,1234-/Force.com-Toolkit-for-PHP