readme: adding libspdlog-dev to list of ubuntu dependencies, also sor…

…ting and cleaning up list to make it easier to read and copy

README.md

@@ -62,7 +62,24 @@ libmpdclient [MPD module]
 On Ubuntu 19.10 you can install all the relevant dependencies using this command:
 
 ```
-sudo apt install libgtkmm-3.0-dev libjsoncpp-dev libinput-dev libsigc++-2.0-dev libpulse-dev libnl-3-dev libdbusmenu-gtk3-dev libnl-genl-3-dev libfmt-dev clang-tidy libmpdclient-dev libwayland-dev libgtk-3-dev gobject-introspection libgirepository1.0-dev scdoc
+sudo apt install \
+  clang-tidy \
+  gobject-introspection \
+  libdbusmenu-gtk3-dev \
+  libfmt-dev \
+  libgirepository1.0-dev \
+  libgtk-3-dev \
+  libgtkmm-3.0-dev \
+  libinput-dev \
+  libjsoncpp-dev \
+  libmpdclient-dev \
+  libnl-3-dev \
+  libnl-genl-3-dev \
+  libpulse-dev \
+  libsigc++-2.0-dev \
+  libspdlog-dev \
+  libwayland-dev \
+  scdoc
 ```