added readme

README.md

@@ -0,0 +1,10 @@
+##
+### Usage
+`sudo apt-get install libmagickwand-dev`
+
+`./go-snake-label -input input.pdf -mode dhlprivat -output label.png`
+or
+`./go-snake-label -input input.pdf -mode dhlprivat -output /dev/stdout`
+
+### Import into other Projects
+`import "git.cheetah.cat/cheetah/go-snake-label/lib"`