title: Assigning default value while creating migration file
body: <pre><code>rails generate migration AddRetweetsCountToTweet retweets_count:integer 
  </code></pre>
  
  <p>Ok I use above line to create migration file that automatically generates code in the generated file to add a column to a model Tweet with datatype integer. Now I want to add default value to the added column while generating the migration file. Is that possible? I googled it but couldn't find. Guys need help. </p>