improve bin/ script usability (#22)

 * Remove `load-script.sh`. This is for dev-only, and is not really
   useful at this stage. Also, it's very difficult to use it right...

 * Make `install.sh` and `pack.sh` more user-friendly.

 * Move scripts to the repository root. There are only two scripts.

 * Hard-code file list into `pack.sh` to prevent including random files
   into the package itself.

Author: esjeon

bin/load-script.sh

@@ -1,4 +1,11 @@
 #!/bin/sh
+set -euf
+
+if [[ ! -f forceblur.kwinscript ]]; then
+	echo "Error: can't find package file: $PWD/forceblur.kwinscript"
+	echo "Please run 'pack' first"
+	exit 1
+fi >&2
 
 plasmapkg2 -i forceblur.kwinscript || plasmapkg2 -u forceblur.kwinscript
 mkdir -pv ~/.local/share/kservices5/

bin/pack.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+set -eu
+
+if ! type zip >&/dev/null; then
+	echo "Error: Can't find 'zip' command."
+	echo "       Please install 'zip' command first."
+	exit 1
+fi >&2
+
+file=forceblur.kwinscript
+rm -rvf "$file"
+exec zip -r9 "$file" \
+	README.md \
+	LICENSE \
+	metadata.desktop \
+	contents \