changed file creation which was shallow cloning anyways to use clone always with deep:false, and contents: false

Author: nmccready

README.md

@@ -309,7 +309,7 @@ gulp.src(['src/test.js', 'src/testdir/test2.js'], { base: 'src' })
 
 - `clone`
 
-  Clones the original file for creation of the map file. Could be important if file history is important. See [file.clone()](https://github.com/gulpjs/vinyl#filecloneoptions) for possible options. Default: `undefined`
+  Clones the original file for creation of the map file. Could be important if file history is important. See [file.clone()](https://github.com/gulpjs/vinyl#filecloneoptions) for possible options. Default: `{deep:false, contents:false}`
 
 ### Plugin developers only:
 

src/write.js

@@ -149,16 +149,7 @@ function write(destPath, options) {
       }
 
       var sourceMapFile;
-      if (options.clone !== undefined) {
-        // add new source map file to stream, clone from original to keep file.history
-        sourceMapFile = file.clone(options.clone);
-      } else {
-        // add new source map file to stream
-        sourceMapFile = new File({
-          cwd: file.cwd,
-          base: file.base
-        });
-      }
+      sourceMapFile = file.clone(options.clone || {deep:false, contents:false});
       sourceMapFile.path = sourceMapPath;
       sourceMapFile.contents = new Buffer(JSON.stringify(sourceMap));
       sourceMapFile.stat = {

test/write.js

@@ -188,9 +188,9 @@ test('write: should write external map files', function(t) {
   }).write(file);
 });
 
-test('write: should keep original file history', function(t) {
+test('write:clone - should keep original file history', function(t) {
     var file = makeFile();
-    var pipeline = sourcemaps.write('../maps', {destPath: 'dist', clone: true});
+    var pipeline = sourcemaps.write('../maps', {destPath: 'dist'});
     var outFiles = [];
     var fileCount = 0;
     pipeline