Update README

Qt 5.6.0 is now out of beta, so remove any mentions of "beta".

We have removed the Qt patches from this repository. I'm not quite sure
where we publish these patches, but none of them are not required
anymore at least on Linux.

Mention that you can install a pre-built Qt.

Link to a better list of mpv dependencies.

README.md

@@ -2,17 +2,10 @@
 
 You need:
 
-* Qt 5.6 beta (on OSX and windows it will be automatically downloaded when you run CMake)
+* Qt 5.6 (on OSX and windows it will be automatically downloaded when you run CMake)
 * cmake 3.1 or newer
 * ninja is recommended for building
 
-Special Qt requirements (if you build it yourself):
-
-* On Windows, you must apply ``qt-patches/0003-Always-enable-viewport-stuff.patch``
-  for correct window scaling.
-* On OSX, you should apply ``qt-patches/0002-qtbase-Don-t-show-the-menu-bar-at-all-in-lion-style-fullscr.patch``
-  to improve the user experience in fullscreen.
-
 ## Building on Mac OS X
 
 Configure
@@ -37,17 +30,21 @@ Or if you prefer working in Xcode, run CMake for the xcode build):
 
 ## Building on Linux
 
-### Building Qt 5.6.0 beta
+### Using the Qt 5.6 release
+
+It is possible to use a pre-built Qt 5.6 from http://download.qt.io/official_releases/qt/5.6/. Just download and install one of the linux-x64 packages. If your distro packages this version, you might be able to use that. Keep in mind that Qt 5.5 or older will not work properly.
 
-You'll want to grab one of the Qt 5.6.0 beta packages from http://download.qt.io/ and unpack it locally. On Fedora, even with a working development environment set up, the following packages were necessary to successfully build Qt (and QtWebEngine):
+### Building Qt 5.6.0
+
+You'll want to grab one of the Qt 5.6.0 (or later) packages from http://download.qt.io/ and unpack it locally. On Fedora, even with a working development environment set up, the following packages were necessary to successfully build Qt (and QtWebEngine):
 
 ``sudo dnf install libxcb libxcb-devel libXrender libXrender-devel xcb-util-wm xcb-util-wm-devel xcb-util xcb-util-devel xcb-util-image xcb-util-image-devel xcb-util-keysyms xcb-util-keysyms-devel libcap-devel snappy-devel libsrtp-devel nss-devel pciutils-devel gperf``
 
 (The majority of the packages on this list came from http://code.qt.io/cgit/qt/qtbase.git/tree/src/plugins/platforms/xcb/README, but everything after xcb-util-keysyms-devel was trial-and-error in attempts build QtWebEngine; this list of packages may not be complete, but hopefully it provides a useful starting point.)
 
-Once you've unpacked the Qt 5.6.0 beta package:
+Once you've unpacked the Qt 5.6.0 package:
 
-* ``cd qt-everywhere-opensource-src-5.6.0-beta``
+* ``cd qt-everywhere-opensource-src-5.6.0``
 * ``./configure -confirm-license -opensource``
 * ``make``
 * ``sudo make install``
@@ -67,7 +64,8 @@ MAKEFLAGS="-j$(nproc)" ./configure -confirm-license -opensource
 
 mpv is a bit easier to build than Qt, and compiles much faster.
 
-Before you attempt to build mpv, make sure you have either ffmpeg 2.4.0 (and related development packages) or libav11 (and related devel packages) installed.
+Before you attempt to build mpv, make sure you have the required dependencies installed: https://github.com/mpv-player/mpv#compilation
+Some optional dependencies like ALSA or PulseAudio support are required for proper operation of Plex Media Player.
 
 * ``git clone git://github.com/mpv-player/mpv``
 * ``cd mpv``
@@ -87,6 +85,8 @@ Assuming that everything else has installed correctly, building Plex Media Playe
 * ``cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DQTROOT=/usr/local/Qt-5.6.0 -DMPV_INCLUDE_DIR=/usr/local/include/mpv -DMPV_LIBRARY=/usr/local/lib/libmpv.so.1 -DCMAKE_INSTALL_PREFIX=output ..``
 * ``ninja-build``
 
+You may have to adjust the path passed to `-DQTROOT`. If you use your distro's Qt, omit this argument.
+
 Once ninja-build completes successfully, you should have a usable ``./src/plexmediaplayer`` binary. Run it and test it out! If it works as you expect, you should be able to run ``sudo install ./src/plexmediaplayer ./src/pmphelper /usr/local/bin`` so that the program is usable from anywhere on the system.
 
 ## License