Update README.md

Update README.md

Removing lines at end of file.

Adds a practical paper by Simon Peyton Jones on tacklin monadic I/O, concurrency and foreign-language calls in Haskell. Published in 2010 by Microsoft Research. This is a very readable and useful paper for anyone learning Haskell and intersted in using it beyond academia.

Adding pdf as well.

Update README.md

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clojure/README.md

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 # Clojure
 
 This is a cross-listing of papers related to Clojure, it's core, contrib and popular libraries. Papers noted at at Clojure talks, meetups, and conferences can be found here as well.
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 ## Data Structures
 * core.rrb-vector
   * [RRB-Trees: Efficient Immutable Vectors](http://infoscience.epfl.ch/record/169879/files/RMTrees.pdf)
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 ## Pattern Matching
 * core.match
   * [Compiling Pattern Matching to good Decision Trees](http://www.cs.tufts.edu/~nr/cs257/archive/luc-maranget/jun08.pdf)
 
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 ## Clojure/West 2014
 * Applicative Functional Programming 
   * [Backtracking Iterators](https://www.lri.fr/~filliatr/publis/enum2.pdf)
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     * [QuickCheck: A Lightweight Tool for Random Testing of Haskell Programs](http://www.cs.tufts.edu/~nr/cs257/archive/john-hughes/quick.pdf)
     * [QuickCheck Testing for Fun and Profit](http://people.inf.elte.hu/center/fulltext.pdf)
     * Property-Based Testing, best explained in John Hughes own talk at [ClojureWest 2014](https://www.youtube.com/watch?v=zi0rHwfiX1Q&list=PLZdCLR02grLp__wRg5OTavVj4wefg69hM).
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haskell/README.md

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+# Haskell
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+* [Tackling the Awkward Squad: monadic input/output, concurrency, exceptions, and foreign-language calls in Haskell](../haskell/tackling-the-awkward-squad-monadic-input-output-concurrency-exceptions-and-foreign-language-calls-in-haskell.pdf) by Simon Peyton Jones