title: Is there a way to add a Jasmine matcher to the whole environment
body: <p>There are plenty of documents that show how to add a matcher to a Jasmine spec (<a href="https://github.com/pivotal/jasmine/wiki/Matchers" rel="noreferrer">here</a>, for example).</p>
  
  <p>Has anyone found a way to add matchers to the whole environment; I'm wanting to create a set of useful matchers to be called by any and all tests, without copypasta all over my specs.</p>
  
  <p>Currently working to reverse engineer the source, but would prefer a tried and true method, if one exists.</p>