docs on Scrapy on Windows + Python 3

docs/faq.rst

@@ -71,7 +71,10 @@ What Python versions does Scrapy support?
 
 Scrapy is supported under Python 2.7 and Python 3.3+.
 Python 2.6 support was dropped starting at Scrapy 0.20.
-Python 3 support was added in Scrapy 1.1. Python 3 is not yet supported on Windows.
+Python 3 support was added in Scrapy 1.1.
+
+.. note::
+    Python 3 is not yet supported on Windows.
 
 Did Scrapy "steal" X from Django?
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docs/intro/install.rst

@@ -86,8 +86,8 @@ Windows
       pip install Scrapy
 
 .. note::
-     Python 3 is not supported on Windows. Installation of Scrapy on Windows
-     with Python 3 will fail.
+     Python 3 is not supported on Windows. This is because Scrapy core requirement Twisted does not support
+     Python 3 on Windows.
 
 Ubuntu 9.10 or above
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