prepare to cran script added

inst/prepare_package_cran.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+echo "==> Switching to cran-release branch."
+BASENAME=$(dirname "$0")
+cd $BASENAME/..
+git checkout -B temp_cran_release
+
+echo "==> Preparing package for CRAN release."
+rm -r build/ docs/ examples/ LICENSE.md CHANGELOG.md README.Rmd README_files build_readme.R examples/ readme_assets/ readme_rmd_template/ inst/semantic/.versions .github/
+
+echo "==> Cleaning README"
+sed -i '' '/link href/d' README.md
+
+mkdir build
+
+echo "==> Building package tar.gz archive."
+R CMD build ../shiny.router
+zip_file=$(find *tar.gz)
+
+echo "==> Checking package."
+R CMD check --as-cran $zip_file
+mv $zip_file build/
+rm -r shiny.router.Rcheck/
+
+echo "==> Reset changes and switching to master branch."
+git reset --hard
+git checkout master
+git branch -D temp_cran_release