Added rudimentary source map support

The `source-map-support` module enables some rudimentary support
for source maps in call stacks, which greatly enhances the
developer experience of working with compiled code.

Author: mstade

bin/tape

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+require('source-map-support/register');
 
 var path = require('path');
 var glob = require('glob');

package.json

@@ -17,6 +17,7 @@
     "inherits": "~2.0.1",
     "object-inspect": "~1.0.0",
     "resumer": "~0.0.0",
+    "source-map-support": "~0.4.0",
     "string.prototype.trim": "^1.1.1",
     "through": "~2.3.4"
   },