Adds note to 'Setting up Kotlin' step -> its slow the first time.

Adds GIT updates

install

@@ -13,5 +13,4 @@ git -C "${DOTBOT_DIR}" submodule sync --quiet --recursive
 git submodule update --init --recursive "${DOTBOT_DIR}"
 
 "${BASEDIR}/${DOTBOT_DIR}/${DOTBOT_BIN}" -d "${BASEDIR}" -c "${CONFIG}" "${@}" \
-	-p ${BASEDIR}/plugins/dotbot-git/git.py
-#	-p ${BASEDIR}/plugins/zsh-syntax-highlighting/
+	--plugin-dir ${BASEDIR}/plugins/dotbot-git