DOC: small edits, eliminating sphinx warnings

README.rst

@@ -17,9 +17,7 @@ insights regarding a particular strategy's performance. Catalyst also supports
 live-trading of crypto-assets starting with three exchanges (Bitfinex, Bittrex, 
 and Poloniex) with more being added over time. Catalyst empowers users to share 
 and curate data and build profitable, data-driven investment strategies. Please 
-visit `enigma.co <https://www.enigma.co>`_ to learn more about Catalyst, or 
-refer to the `whitepaper <https://www.enigma.co/enigma_catalyst.pdf>`_ for 
-further technical details.
+visit `enigma.co <https://www.enigma.co>`_ to learn more about Catalyst.
 
 Catalyst builds on top of the well-established 
 `Zipline <https://github.com/quantopian/zipline>`_ project. We did our best to 

docs/source/videos.rst

@@ -11,6 +11,7 @@ Installation: MacOS
 
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 Installation: Windows
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@@ -21,6 +22,7 @@ Where things go smoothly:
    <iframe width="560" height="315" src="https://www.youtube.com/embed/H8HqcEbZmkk" frameborder="0" allowfullscreen></iframe>
 
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 Where things don't:
 
 .. raw:: html
@@ -29,6 +31,7 @@ Where things don't:
 
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 Backtesting a Strategy
 ----------------------
 
@@ -44,6 +47,7 @@ sell. Hopefully, we’ll ride the waves.
 
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 Live Trading a Strategy
 -----------------------
 
@@ -54,5 +58,6 @@ in the previous video, we now take it to trade live against the Bittrex exchange
 .. raw:: html
 
 	<iframe width="560" height="315" src="https://www.youtube.com/embed/NupiE-Xuglw" frameborder="0" allowfullscreen></iframe>
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