title: How to parse nls fit (multi line text) file using r?
body: <p>How to parse nls fit (multi line text) file as given below using r?</p>
  
  <pre><code>Nonlinear regression model
    model: A ~ BOTTOM + (TOP - BOTTOM)/(1 + 10^((logEC50 - xdata) * hillSlope))
     data: keep
        TOP    BOTTOM hillSlope   logEC50 
    101.027     0.704     1.374    -6.319 
   residual sum-of-squares: 581.7
  
  Number of iterations to convergence: 7 
  Achieved convergence tolerance: 1.798e-06
  </code></pre>
  
  <p>I would like to get a table of fourth row text as column headers and the fifth row numbers as values s shown below:</p>
  
  <pre><code>TOP      BOTTOM   hillSlope   logEC50 
  101.027  0.704    1.374       -6.319
  </code></pre>