Update csrv.py

Added a few comments on whats required to run this script

csrv.py

@@ -0,0 +1,69 @@
+# Required Klein and Pychromecast modules
+from twisted.web.static import File
+from klein import run, route
+from klein import Klein
+import pychromecast
+import time
+import os
+import json
+
+
+app = Klein()
+
+chromecasts = pychromecast.get_chromecasts()
+[cc.device.friendly_name for cc in chromecasts]
+cast = next(cc for cc in chromecasts if cc.device.friendly_name == "living room") # You may need to change to your chromecast name for now
+cast.wait()
+print(cast.status) # Has display name and status text
+mc = cast.media_controller
+
+@route('/movies/', branch=True)
+def static(request):
+    return File("./movies")
+
+@route('/devices/')
+def dlist(request):
+    
+    return mc
+
+@route('/play/<fn>')
+def crun(request,fn):
+    mc.play_media('http://192.168.1.158:8080/movies/' + fn, 'video/mp4') # Update this IP to match yours
+    mc.block_until_active()
+    mc.pause()
+    time.sleep(2)
+    mc.play()
+    return 'Play'
+
+@route('/pause/')
+def cpause(request):
+    mc.pause()
+    return 'Pause'
+
+@route('/resume/')
+def cres(request):
+    mc.play()
+    return 'Resuming'
+
+@route('/stop/')
+def cstop(request):
+    mc.stop()
+    return 'STOP!!!'
+
+@route('/list/')
+def clist(request):
+    path = './movies'
+    files = os.listdir\
+    (path)
+    e = []    
+    d = {'data' : e }    
+    for x in range(len(files)):
+         #e.append("movie")
+         e.append(files[x])
+    return json.dumps(d)
+
+@route('/')
+def home(request):
+    return 'Welcome to the RPI Python based Chromecast Media Service! Please use the HTTP API!'
+
+run("192.168.1.158", 8080) # Obviously you need to change that IP to your local one