title: Reading two-line headers in R
body: <p>What is the best way to read a file into R when the header has two necessary lines for the header?</p>
  
  <p>This happens to me all the time, as people often use one line for the column name and then include another line underneath it for the unit of measurement.  I don't want to skip anything.  I want the names and the units to carry through.</p>
  
  <p>Here is what a <a href="https://www.dropbox.com/s/9328klp413xej8g/data.txt">typical file with two headers might look like</a>:</p>
  
  <pre><code>trt   biomass    yield
  crop    Mg/ha    bu/ac
  C2      17.76   205.92
  C2      17.96   207.86
  CC      17.72   197.22
  CC      18.42   205.20
  CCW     18.15   200.51
  CCW     17.45   190.59
  P       3.09    0.00
  P       3.34    0.00
  S2      5.13    49.68
  S2      5.36    49.72
  </code></pre>