Add install script to archive

This includes a script, install.sh, with the archive created for distribution.

Fixes issue #75

dist/install.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+bin=ipget
+
+# this script is currently brain dead.
+# it merely tries two locations.
+# in the future maybe use value of $PATH.
+
+binpath=/usr/local/bin
+if [ -d "$binpath" ]; then
+  mv "$bin" "$binpath/$bin"
+  echo "installed $binpath/$bin"
+  exit 0
+fi
+
+binpath=/usr/bin
+if [ -d "$binpath" ]; then
+  mv "$bin" "$binpath/$bin"
+  echo "installed $binpath/$bin"
+  exit 0
+fi