Add ldflags to 'go build' cmd to bring back version number

Closes #97

Author: dotcs

script/release

@@ -43,7 +43,7 @@ for ARCH in "amd64" "386" "arm64"; do
 
         rm -f ${BINFILE}
 
-        GOOS=${OS} GOARCH=${ARCH} go build github.com/${USER}/${REPO}
+        GOOS=${OS} GOARCH=${ARCH} go build -ldflags "-X main.gronVersion=${VERSION}" github.com/${USER}/${REPO}
 
         if [[ "${OS}" == "windows" ]]; then
             ARCHIVE="${BINARY}-${OS}-${ARCH}-${VERSION}.zip"