Updated Building for Ubuntu 16.04 (markdown)

Building-for-Ubuntu-16.04.md

@@ -46,4 +46,23 @@ Remove the PPA (optional):
 
 ## Step 3: Run Citra
 
-    ./src/citra_qt/citra-qt
+    ./src/citra_qt/citra-qt
+
+## Optional: Install new QT version
+
+If you had an error while building citra-qt part (this part was added from an `AutoMoc subprocess error` when running a qt5/bin/moc command, but this may fix some other errors)
+
+- Go to http://download.qt.io/official_releases/qt/ and get the latest linux version link (this guide used 5.11.1 at the time) and run the following commands:
+
+      wget link_to_latest_linux_official_release
+      chmod +x qt-opensource-linux-x64-x.x.x.run
+      ./qt-opensource-linux-x64-x.x.x.run
+
+- Install selecting only `Desktop gcc` option besides the `Tools` one that you can't remove
+- Add those exports to your .bashrc file (change QTDIR variable if installing another version)
+
+      export QTDIR="$HOME/Qt5.11.1/5.11.1/gcc_64"
+      export PATH="$QTDIR/bin:$PATH"
+      export LD_LIBRARY_PATH="$QTDIR/lib:$LD_LIBRARY_PATH"
+
+- Reload your .bashrc file and try building again from the start.