title: how to read text files and create a data frame in R
body: <p>Need to read the txt file in 
  <a href="https://raw.githubusercontent.com/fonnesbeck/Bios6301/master/datasets/addr.txt" rel="noreferrer">https://raw.githubusercontent.com/fonnesbeck/Bios6301/master/datasets/addr.txt</a></p>
  
  <p>and convert them into a data frame R with column number as: LastName, FirstName, streetno, streetname, city, state, and zip...</p>
  
  <p>Tried to use sep command to separate them but failed...</p>