readme extras for VRAM for

added missing packages to requirements for #74
add support for negative numbers in X/Y plot (plus ranges) #73
changed progressbar to work properly with custom modes

webui.py

@@ -123,7 +123,7 @@ queue_lock = threading.Lock()
 def wrap_gradio_gpu_call(func):
     def f(*args, **kwargs):
         shared.state.sampling_step = 0
-        shared.state.job_count = 1
+        shared.state.job_count = -1
         shared.state.job_no = 0