Remove flash detection

Accurate flash detection is a little more complicated than this. The
current code causes an error on IE 10.

This removes the attempt to detect if flash is available. Instead, it
attempts to initialize ZeroClipboard and sets up the fallback.
ZeroClipboard will be a no-op if flash is not available, in which case
the fallback will already be configured. If flash is available, it will
put a flash object over the button and the fallback will never get
called.

assets/js/app.coffee

@@ -2,14 +2,6 @@
 ---
 
 class Choosealicense
-
-  # Checks if Flash is available in the client.
-  flashAvailable: ->
-    if ActiveXObject?
-      !!(new ActiveXObject("ShockwaveFlash.ShockwaveFlash"))
-    else
-      !!navigator.mimeTypes["application/x-shockwave-flash"]
-
   # Selects the content of a given element
   selectText: (element) ->
     if document.body.createTextRange
@@ -63,7 +55,7 @@ class Choosealicense
     false
 
   # Initializes ZeroClipboard
-  initZeroClipboard: ->
+  initClipboard: ->
     # Backup the clipboard button's original text.
     $(".js-clipboard-button").data "clipboard-prompt", $(".js-clipboard-button").text()
 
@@ -72,22 +64,12 @@ class Choosealicense
       moviePath: "/assets/vendor/zeroclipboard/ZeroClipboard.swf"
     clip.on "mouseout", @clipboardMouseout
     clip.on "complete", @clipboardComplete
-    clip
 
-  # Initializes an alternative way to copy the license for non-flash compatible
-  # browsers
-  initAlternativeClipboard: ->
+    # Fallback if flash is not available
     $(".js-clipboard-button").click (e) =>
       target = "#" + $(e.target).data("clipboard-target")
       @selectText $(target)[0]
 
-  # if Zero Clipboard is present, bind to button and init
-  initClipboard: ->
-    if ZeroClipboard? && @flashAvailable()
-      @initZeroClipboard()
-    else
-      @initAlternativeClipboard()
-
   # Callback to restore the clipboard button's original text
   clipboardMouseout: (client, args) ->
     @textContent = $(this).data("clipboard-prompt")