Update documentation pertaining to PRAW4 prerelease status

.github/CONTRIBUTING.md

@@ -13,7 +13,7 @@ participating in this project you agree to abide by its terms.
    in the [praw-dev/praw](https://gitter.im/praw-dev/praw) channel on gitter.
 
 0. Please check the
-   [Unreleased](https://github.com/praw-dev/praw/blob/praw4/CHANGES.rst#unreleased)
+   [Unreleased](https://github.com/praw-dev/praw/blob/master/CHANGES.rst#unreleased)
    section of the latest changelog before filing an issue as it is possible the
    issue has already been resolved.
 

README.rst

@@ -34,12 +34,9 @@ install PRAW is via `pip <https://pypi.python.org/pypi/pip>`_.
 
 .. code-block:: bash
 
-   pip install --pre praw
+   pip install praw
 
-.. note:: The ``--pre`` flag is needed to install PRAW4 as it is not yet the
-   official version.
-
-To install the latest development version of PRAW4 run the following instead:
+To install the latest development version of PRAW run the following instead:
 
 .. code-block:: bash
 
@@ -100,7 +97,7 @@ Otherwise, there are a few official places to ask questions about PRAW:
 
 `/r/redditdev <https://www.reddit.com/r/redditdev>`_ is the best place on
 Reddit to ask PRAW related questions. This subreddit is for all Reddit API
-related discussion so please tag submissions with *[PRAW4]*. Please perform a
+related discussion so please tag submissions with *[PRAW]*. Please perform a
 search on the subreddit first to see if anyone has similar questions.
 
 Real-time chat can be conducted via the `praw-dev/praw
@@ -153,7 +150,7 @@ Bryce began work on PRAW4, a complete rewrite of PRAW.
 License
 -------
 
-PRAW4's source is provided under the `Simplified BSD License
+PRAW's source (v4.0.0+) is provided under the `Simplified BSD License
 <https://github.com/praw-dev/praw/blob/0860c11a9309c80621c267af7caeb6a993933744/LICENSE.txt>`_.
 
 * Copyright (c), 2016, Bryce Boe

docs/getting_started/installation.rst

@@ -6,10 +6,7 @@ PRAW is via ``pip``.
 
 .. code-block:: bash
 
-   pip install --pre praw
-
-.. note:: The ``--pre`` option is needed as PRAW4 is not yet the official
-          version.
+   pip install praw
 
 .. note:: Depending on your system, you may need to use ``pip3`` to install
           packages for python 3.
@@ -28,10 +25,7 @@ PRAW can be updated by running:
 
 .. code-block:: bash
 
-   pip install --pre --upgrade praw
-
-.. note:: The ``--pre`` option is needed as PRAW4 is not yet the official
-          version.
+   pip install --upgrade praw
 
 Installing Older Versions
 -------------------------