Rename dont_proxy to dont_splash and document it

Author: Gallaecio

README.rst

@@ -172,7 +172,9 @@ using a ``splash`` spider attribute::
         }
 
 If you use a ``splash`` spider attribute, you can still override those Splash
-settings for specific requests using the ``splash`` request meta key.
+settings for specific requests using the ``splash`` request meta key, or
+disable Splash completely setting the ``dont_splash`` request meta key to
+``True``.
 
 Use ``request.meta['splash']`` API in middlewares or when scrapy.Request
 subclasses are used (there is also ``SplashFormRequest`` described below).

scrapy_splash/middleware.py

@@ -258,7 +258,7 @@ def _remote_keys(self):
         return self.crawler.spider.state[self.remote_keys_key]
 
     def _get_splash_options(self, request, spider):
-        if request.meta.get("dont_proxy"):
+        if request.meta.get("dont_splash") is True:
             return
         spider_options = getattr(spider, "splash", {})
         request_options = request.meta.get("splash")