diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 00000000..c1c8c943
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,18 @@
+on:
+  push:
+    branches:
+      - master
+      - photon-style
+  pull_request:
+    branches:
+     - master
+name: 'ShellCheck'
+
+jobs:
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run ShellCheck
+      uses: ludeeus/action-shellcheck@master
diff --git a/Install.sh b/Install.sh
deleted file mode 100755
index e87dcfd2..00000000
--- a/Install.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-autocopy() {
-  local file=${1}
-  local target=${2}
-
-  if [ -e "${target}" ]; then
-    echo "${target} alreay exist."
-    echo "Now Backup.."
-    autocopy "${target}" "${target}.bak"
-    echo""
-  fi
-
-  cp -v "${file}" "${target}"
-}
-
-install_lepton() {
-  local userConfig="user.js"
-  autocopy "${userConfig}" "../${userConfig}"
-}
-install_lepton
diff --git a/install.sh b/install.sh
new file mode 100755
index 00000000..e2730ec4
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2185
+copychrome(){
+  \cp -f userChrome.css ~/.mozilla/firefox/"$1"/chrome/userChrome.css
+  \cp -f userContent.css ~/.mozilla/firefox/"$1"/chrome/userContent.css
+  \cp -f -r icons ~/.mozilla/firefox/"$1"/chrome/
+}
+backupchrome(){
+  if [[ -f ~/.mozilla/firefox/$1/chrome/userChrome.css ]];then
+    \mv -f ~/.mozilla/firefox/"$1"/chrome/userChrome.css ~/.mozilla/firefox/"$1"/chrome/userChrome.css.bak
+    \mv -f ~/.mozilla/firefox/"$1"/chrome/userContent.css ~/.mozilla/firefox/"$1"/chrome/userContent.css.bak
+  fi
+  cd ~/.mozilla/firefox/"$1"/chrome/icons || exit
+  if [[ -f ~/.mozilla/firefox/$1/chrome/icons/bug.svg ]];then
+    for file in *
+    do
+      \mv -f "$file" "${file/.svg/.svg.bak}"
+    done
+  fi
+  cd "$wherewasi" || exit
+}
+backupjs(){
+  \mv -f ~/.mozilla/firefox/"$1"/user.js ~/.mozilla/firefox/"$1"/user.js.bak
+}
+copyjs(){
+  \cp -f user.js ~/.mozilla/firefox/"$1"/user.js
+}
+doneinstall()
+{
+  echo "Installation finished."
+}
+install_lepton(){
+if [[ -f ~/.mozilla/firefox/$1/user.js ]]; then
+    printf "user.js exists. Do you want to make a backup of it?(Y/n): "
+    read -r
+    case $REPLY in
+      [Nn]* ) printf "Overwriting...\n";copyjs "$1";;
+      * )printf "Making a backup...\n";backupjs "$1";copyjs "$1";;
+    esac
+else
+    copyjs "$1"
+fi
+if [[ -d "$HOME/.mozilla/firefox/$1/chrome" ]]; then
+  printf "The directory chrome/ exists. Do you want to make a backup of it?(Y/n): "
+  read -r
+  case $REPLY in
+      [Nn]* ) printf "Overwriting...\n";copychrome "$1";doneinstall;;
+      * )printf "Making a backup...\n";backupchrome "$1";copychrome "$1";doneinstall;;
+  esac
+else
+  mkdir ~/.mozilla/firefox/"$1"/chrome/
+  copychrome "$1"
+  doneinstall
+fi
+}
+
+multipleinstall(){
+  echo "You have more than 1 profile for your install. What will you use? Pick a number."
+  grep "$1" ~/.mozilla/firefox/profiles.ini | grep 'Default=' | cut -f 2 -d'=' > .installs
+  cat --number .installs
+  read -r
+  profiledir="$(head -"${REPLY}" .installs | tail +"${REPLY}")"
+  install_lepton "$profiledir"
+  rm -rf .installs
+}
+
+install_option(){
+  if [ "$(grep -c "$1" ~/.mozilla/firefox/.folders)" == "1" ]; then
+    profiledir="$(grep "$1" ~/.mozilla/firefox/profiles.ini | grep 'Default=' | cut -f 2 -d'=')"
+    install_lepton "$profiledir"
+  else
+    multipleinstall "$1"
+  fi
+  rm -rf ~/.mozilla/firefox/.folders
+}
+wherewasi="$(pwd)"
+cd ~/.mozilla/firefox/ || exit
+find -maxdepth 1 | cut -f 2 -d"/" | sed -n '1!p' > .folders
+cd "$wherewasi" || exit
+if [ "$(grep -c "Default=" ~/.mozilla/firefox/installs.ini)" == "1" ]; then
+  #I have no idea how to sort this out. You fix it please.
+  if [ "$(grep -c ".dev-edition-default" ~/.mozilla/firefox/.folders)" == "1" ] && [ "$(grep -c ".dev-edition-default" ~/.mozilla/firefox/.folders)" -gt "1" ]; then
+    install_option .dev-edition-default
+  elif [ "$(grep -c ".default-release" ~/.mozilla/firefox/.folders)" == "1" ] && [ "$(grep -c ".default-release" ~/.mozilla/firefox/.folders)" -gt "1" ]; then
+    install_option .default-release
+  elif [ "$(grep -c ".default-nightly" ~/.mozilla/firefox/.folders)" == "1" ] && [ "$(grep -c ".default-nightly" ~/.mozilla/firefox/.folders)" -gt "1" ]; then
+    install_option .default-nightly
+  elif [ "$(grep -c ".default-esr" ~/.mozilla/firefox/.folders)" == "1" ] && [ "$(grep -c ".default-esr" ~/.mozilla/firefox/.folders)" == "1" ]; then
+    install_option .default-esr
+  else
+    echo "No Firefox profile found."
+    exit
+  fi
+else
+  printf "Will you install for ESR, Default, Dev, Nightly?(ESR/Default/Dev/Nightly): "
+  read -r
+  case $REPLY in
+    [Ee][Ss][Rr]) install_option .default-esr;;
+    [Dd][Ee][Ff][Aa][Uu][Ll][Tt]) install_option .default-release;;
+    [Dd][Ee][Vv]) install_option .dev-edition-default;;
+    [Nn][Ii][Gg][Hh][Tt][Ll][Yy]) install_option .default-nightly;;
+    *) echo "Unspecified.";exit;;
+  esac
+fi