Update command for installing build deps in README (#17)

* Added build requirement w/ Ubuntu/Debian command

Build requirements were added along with the relevant Ubuntu/Debian apt command to install all of them in one go. The command was tested on Linux Mint 18.2 KDE, which is based on Ubuntu 16.04.1 LTS.

* Updated build dep install command

`apt` command for installing all build dependencies has been updated to account for Kirigami 2. This was tested on KDE Neon User Edition 5.13.

More details about test system:
`lsb_release -a`
```
No LSB modules are available.
Distributor ID: neon
Description:    KDE neon User Edition 5.13
Release:        18.04
Codename:       bionic
```
`neofetch --stdout`
```
julius@win8linux-X541UV 
----------------------- 
OS: KDE neon User Edition 5.13 x86_64 
Host: X541UV 1.0 
Kernel: 4.15.0-36-generic 
Uptime: 1 hour, 47 mins 
Packages: 2470 
Shell: zsh 5.4.2 
Resolution: 1366x768 
DE: KDE 
WM: KWin 
Theme: Breeze Dark [KDE], Breeze-Dark [GTK2/3] 
Icons: Breeze-dark [KDE], Breeze-dark [GTK2/3] 
Terminal: konsole 
Terminal Font: SauceCodePro Nerd Font Mono 9 
CPU: Intel i5-6198DU (4) @ 2.800GHz 
GPU: Intel HD Graphics 510 
GPU: NVIDIA GeForce 920MX 
Memory: 2241MiB / 7838MiB                                                                
```

README.md

@@ -15,16 +15,16 @@ The KCM is only build, if the -DNO_SYSTEMD option is unset or set to false.
 
 # Requirements for building
 * Qt5: Base/Core, Widgets, GUI, QML
-* KF5: I18n, Auth, Config, Package, Declarative, CoreAddons, KCMUtils, Extra-Cmake-Modules
+* KF5: I18n, Auth, Config, Package, Declarative, CoreAddons, KCMUtils, Extra-Cmake-Modules, Kirigami 2
 
 # Additional requirements for running
 * Qt5: Quick
 * KF5: Kirigami2
 
 ## Debian/Ubuntu command to install the build requirements:
-`sudo apt-get install libkf5config-dev libkf5auth-dev libkf5package-dev libkf5declarative-dev libkf5coreaddons-dev libkf5kcmutils-dev libkf5i18n-dev libqt5core5a libqt5widgets5 libqt5gui5 libqt5qml5 extra-cmake-modules qtbase5-dev`
+`sudo apt-get install libkf5config-dev libkf5auth-dev libkf5package-dev libkf5declarative-dev libkf5coreaddons-dev libkf5kcmutils-dev libkf5i18n-dev libqt5core5a libqt5widgets5 libqt5gui5 libqt5qml5 extra-cmake-modules qtbase5-dev kirigami2-dev libkf5kirigami2-5 qml-module-org-kde-kirigami2 cmake`
 
-**Note:** This was tested on Linux Mint 18.2 KDE, which is based on Ubuntu 16.04 LTS (Debian 9 Stretch/Sid).
+**Note:** This was tested on KDE Neon User Edition 5.13, which is based on Ubuntu 18.04 LTS (Debian 9 Stretch/Sid).
 
 ## Example: