title: Combining multiple lines in a Unix file based on a matching pattern
body: <p>I have a file as follows:</p>
  
  <pre><code>Country:  USA
  Currency: Dollars
  Country:  Canada
  Currency: Canadian
            Dollars
  Country:  Australia
  Currency: Australian
            Dollars
  Country:  France
  Currency: Euro
  </code></pre>
  
  <p>I have to combine the two lines and get output as follows:</p>
  
  <pre><code>Country:  USA
  Currency: Dollars
  Country:  Canada
  Currency: Canadian Dollars
  Country:  Australia
  Currency: Australian Dollars
  Country:  France
  Currency: Euro
  </code></pre>
  
  <p>I tried using <code>tr</code> and replacing the newline with spaces, but it didn't work. Can someone help with this.</p>
  
  <p>Thanks.</p>