Updated docs to remove line about python 3 incompatability (slackapi#242

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docs-src/index.rst

@@ -21,9 +21,6 @@ of Python to get your project up and running as quickly as possible.
 Requirements and Installation
 ******************************
 
-|product_name| currently works with Python 2.7 (watch for Python 3 support in the future), and requires `PyPI` to install
-dependencies. Of course, since you probably installed this module with `PyPI`, this is not a problem.
-
 We recommend using `PyPI <https://pypi.python.org/pypi>`_ to install |product_name|
 
 .. code-block:: bash

docs/index.html

@@ -141,8 +141,6 @@ <h1>Slack Developer Kit for Python<a class="headerlink" href="#product-name" tit
 of Python to get your project up and running as quickly as possible.</p>
 <div class="section" id="requirements-and-installation">
 <h2>Requirements and Installation<a class="headerlink" href="#requirements-and-installation" title="Permalink to this headline">¶</a></h2>
-<p>Slack Developer Kit for Python currently works with Python 2.7 (watch for Python 3 support in the future), and requires <cite>PyPI</cite> to install
-dependencies. Of course, since you probably installed this module with <cite>PyPI</cite>, this is not a problem.</p>
 <p>We recommend using <a class="reference external" href="https://pypi.python.org/pypi">PyPI</a> to install Slack Developer Kit for Python</p>
 <div class="highlight-bash"><div class="highlight"><pre><span></span>pip install slackclient
 </pre></div>