Added a section on how to setup the OSK in Plasma Mobile

PlasmaMobile.rst

@@ -33,6 +33,7 @@ Build plasma-phone-components::
    purism@pureos:~/plasma-phone-components$ tar czvf plasma-phone-components_0.7+git20180223.orig.tar.gz .*
    purism@pureos:~/plasma-phone-components$ mv plasma-phone-components_0.7+git20180223.orig.tar.gz ..
    purism@pureos:~/plasma-phone-components$ cp -r ../plasma-phone-components-packaging/debian .
+   purism@pureos:~/plasma-phone-components$ dpkg-buildpackage -sa -us -uc
 
 The build results in ~/plasma-phone-components_0.7+git20180223-1_armhf.deb but before we can install it, we need to build and install a few dependencies::
 
@@ -128,3 +129,37 @@ Note that there is a known issue where the mouse functions but is invisible.
    :width: 400px
    :height: 550px
    :align: center
+
+
+*****************
+Onscreen Keyboard
+*****************
+
+To run the onscreen keyboard in Plasma Mobile, you'll first need to install qtvirtualkeyboard-plugin. This application `is in Debian <https://packages.debian.org/sid/qtvirtualkeyboard-plugin>`_  but not available for armhf so get the package soure from Debian, build and install it::
+
+   purism@pureos:~$ wget http://http.debian.net/debian/pool/main/q/qtvirtualkeyboard-opensource-src/qtvirtualkeyboard-opensource-src_5.9.2+dfsg.orig.tar.xz
+   purism@pureos:~$ wget http://http.debian.net/debian/pool/main/q/qtvirtualkeyboard-opensource-src/qtvirtualkeyboard-opensource-src_5.9.2+dfsg-1.debian.tar.xz
+   purism@pureos:~$ tar xf qtvirtualkeyboard-opensource-src_5.9.2+dfsg.orig.tar.xz
+   purism@pureos:~$ tar xf qtvirtualkeyboard-opensource-src_5.9.2+dfsg-1.debian.tar.xz'
+   purism@pureos:~$ cd qtvirtualkeyboard-opensource-src-5.9.2 && sudo mv ../debian .
+   purism@pureos:~/qtvirtualkeyboard-opensource-src-5.9.2$ dpkg-buildpackage -sa -us -uc
+
+This will build qtvirtualkeyboard-plugin and it's dependent qml-module-qtquick-virtualkeyboard and install them and start Plasma Mobile::
+
+   purism@pureos:~$ sudo dpkg -i qml-module-qtquick-virtualkeyboard_5.9.2+dfsg-1_armhf.deb qtvirtualkeyboard-plugin_5.9.2+dfsg-1_armhf.deb
+
+Once you have a Plasma Mobile desktop, check the keyboard status and enable it::
+
+   purism@pureos:~$ qdbus org.kde.KWin /VirtualKeyboard org.kde.kwin.VirtualKeyboard.isEnabled
+   false
+   purism@pureos:~$ qdbus org.kde.KWin /VirtualKeyboard org.kde.kwin.VirtualKeyboard.isenable
+   purism@pureos:~$ qdbus org.kde.KWin /VirtualKeyboard org.kde.kwin.VirtualKeyboard.isEnabled
+   true
+
+Now, your onskreen keyboard should work. To test this, open kwrite and click in the text field. You should see that the keyboard is initialized and functioning!
+
+.. image:: images/osk.jpg
+   :width: 400px
+   :height: 550px
+   :align: center
+