Added hack to generate .spec file from local crate

rust2rpm.sh

+#!/bin/bash
+
+set -e
+set -x
+
+CACHE=${HOME}/.cache/rust2rpm
+cargo package
+mkdir -p ${CACHE}
+for f in $(pwd)/target/package/*.crate ; do
+    echo $f
+    SYMLINK=${CACHE}/$(basename "$f")
+    if [ -L "${SYMLINK}" ] ; then
+        rm -f "${SYMLINK}"
+    fi
+    ln -s "$f" "${SYMLINK}"
+    if [[ "$(basename "$f")" =~ (.*)-(.*).crate ]] ; then
+        NAME=${BASH_REMATCH[1]}
+        VERSION=${BASH_REMATCH[2]}
+        rust2rpm --stdout ${NAME} ${VERSION} > rust-${NAME}-${VERSION}.spec
+    fi
+done