Shorten apm paths on Windows

build/tasks/build-task.coffee

@@ -144,7 +144,11 @@ module.exports = (grunt) ->
     cp 'spec', path.join(appDir, 'spec')
     cp 'src', path.join(appDir, 'src'), filter: /.+\.(cson|coffee)$/
     cp 'static', path.join(appDir, 'static')
-    cp 'apm', path.join(appDir, 'apm'), filter: filterNodeModule
+
+    if process.platform is 'win32'
+      cp path.join('apm', 'node_modules', 'atom-package-manager'), path.join(appDir, 'apm'), filter: filterNodeModule
+    else
+      cp 'apm', path.join(appDir, 'apm'), filter: filterNodeModule
 
     if process.platform is 'darwin'
       grunt.file.recurse path.join('resources', 'mac'), (sourcePath, rootDirectory, subDirectory='', filename) ->