Put CA66 and PK60 under a playkbtw directory (#3102)

* Add playkbtw directory to put ca66 and pk60 in

* delete old references

* edit readmes for links

keyboards/playkbtw/ca66/readme.md

@@ -5,9 +5,11 @@ Custom 65%
 
 Keyboard Maintainer: QMK Community   
 Hardware Supported: CA66   
+Hardware Availability: [Play Keyboard](http://playkeyboard.qdm.com.tw/)
+
 
 Make example for this keyboard (after setting up your build environment):
 
-    make ca66:default
+    make playkbtw/ca66:default
 
 See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.

keyboards/playkbtw/pk60/readme.md

@@ -10,4 +10,7 @@ Keyboard Maintainer: [Barry Huang](https://github.com/yj7272098)
 Hardware Supported: Play Keyboard60  
 Hardware Availability: [Play Keyboard](http://playkeyboard.qdm.com.tw/)
 
-Powered by QMK Firmware.
+Make example for this keyboard (after setting up your build environment):
+
+    make playkbtw/pk60:default
+

keyboards/playkbtw/readme.md

@@ -0,0 +1,5 @@
+# PlayKeyboardTW
+
+[PlayKeyboardTW]((http://playkeyboard.qdm.com.tw/)) is a Taiwan based company responsible for keyboards such as the CA66 and the PK60. 
+
+This directory is a collection of all their keyboards.