Added autotools for a more elegant install and updated README.md

Makefile.in

@@ -0,0 +1,25 @@
+PREFIX=@prefix@
+DESTDIR=
+CC?=gcc
+
+builddir:
+	mkdir -p build
+	mkdir -p build/adwaita-xfce && cp -R adwaita-xfce/. build/adwaita-xfce
+
+install:
+	install -d $(DESTDIR)/$(PREFIX)/share/icons
+	cp -rf build/adwaita-xfce $(DESTDIR)/$(PREFIX)/share/icons
+	@echo
+	@echo The icon-theme cache has not yet been regenerated, which means your changes may not be visible yet. Please run 'make icon-caches' next.
+
+uninstall:
+	rm -rf $(DESTDIR)/$(PREFIX)/share/icons/adwaita-xfce
+
+icon-caches:
+	gtk-update-icon-cache -f $(DESTDIR)/$(PREFIX)/share/icons/adwaita-xfce
+
+.PHONY: all $(SUBDIRS)
+
+clean:
+	rm -rf ./build
+	rm -rf ./Makefile

README.md

@@ -1,15 +1,35 @@
 # Adwaita-Xfce icon theme
 
-This icon theme inherits from Adwaita. It is not a full icon theme but rather an extension for Adwaita fixing missing icons that are used in Xfce. 
+This icon theme is an extension for Adwaita fixing missing icons that are used in Xfce. It is not a complete theme and inherits the bulk of icons from Adwaita.
 
 ## Requirements
 
-You need adwaita icon theme to be installed in your system
+You need the original adwaita icon theme installed in your system
 
 ## Installation
 
-Clone this repository and place the content in $HOME/.local/icons or /usr/share/icons
+You can use the Makefile to install the theme locally (default prefix is /usr/local).
+
+
+### Installation for the current user only (without admin privileges)
+
+```
+./configure --prefix=$HOME/.local
+make
+make install
+make icon-caches
+```
+
+### Installation for all users (default path is /usr/local)
+
+```
+./configure
+make
+sudo make install
+sudo make icon-caches
+```
 
 ## Usage
 
-Select adwaita-xfce in Xfce Settings > Appearance > Icons
+1. Open Xfce Settings > Appearance > Icons
+2. Select Adwaita-Xfce

configure

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+help () {
+    echo "Supported options are:"
+    echo "    --help                          print this help and exit"
+    echo "    --prefix=<path>                 specify installation prefix"
+    echo "        default <path> is /usr/local"
+}
+
+PREFIX="/usr/local"
+while [ $# -gt 0 ]; do
+    case $1 in
+        --help)
+            help
+            exit 0
+            ;;
+        --prefix=*)
+            PREFIX=`echo $1 | sed 's/--prefix=//'`
+            ;;
+        *)
+            echo "Unknown option $1"
+            ;;
+    esac
+    shift
+done
+
+echo "Creating Makefile..."
+sed -e s,@prefix@,$PREFIX, Makefile.in > Makefile
+echo "Installation prefix is $PREFIX"