diff --git a/.editorconfig b/.editorconfig
index e29c6fe..d3b3e1a 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -19,3 +19,19 @@ trim_trailing_whitespace = false
 # windows shell scripts
 [*.{cmd,bat,ps1}]
 end_of_line = crlf
+
+[*.{sh,tmux}]
+indent_style = space
+indent_size = 2
+
+shell_variant      = posix # like -ln=posix
+binary_next_line   = true  # like -bn
+switch_case_indent = true  # like -ci
+space_redirects    = true  # like -sr
+keep_padding       = true  # like -kp
+function_next_line = true  # like -fn
+never_split        = true  # like -ns
+
+[Makefile]
+indent_style = tab
+indent_size = 8
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5f1ff99
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,5 @@
+.PHONY: check-scripts
+check-scripts:
+	@# Fail if any of these files have warnings
+	find . -type f -not -path "./uncommited/*" -a \( -iname "*.sh" -o -iname "*.tmux" \) | xargs -I % sh -c 'shellcheck %'
+	find . -type f -not -path "./uncommited/*" -a \( -iname "*.sh" -o -iname "*.tmux" \)  | xargs -I % sh -c 'shfmt -l -d %'
diff --git a/README.md b/README.md
index 1c0137f..ff5426d 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,44 @@ set -g @tmux-gruvbox 'dark' # or 'light', 'dark-transparent', 'light-transparent
 
 Hit `prefix + I` to fetch the plugin and source it. Your Tmux should be updated with the theme at this point.
 
+## Development
+
+To run project locally:
+
+1.  clone the repo to desired place
+
+    ```bash
+    cd $HOME/projects/
+    git clone ...
+    ```
+
+1.  create symlink in plugin dir to the cloned repo:
+
+    ```bash
+    # cd to tmux plugin directory
+    cd ~/.tmux/plugins/
+
+    # create simlink to cloned repo
+    ln -sf $HOME/projects/tmux-gruvbox/ tmux-gruvbox
+    ```
+
+1.  and in `~/.tmux.conf` set
+
+    ```bash
+    # add plugin
+    set -g @plugin 'egel/tmux-gruvbox'
+    # set desired options...
+    set -g @tmux-gruvbox 'dark'
+    ```
+
+### Linters & formatters
+
+To keep the files clean we use few program to help us achieve it:
+
+1.  Editorconfig (make sure your editor have it)
+2.  Markdown (prettier/prettierd)
+3.  Shell (shellcheck, shfmt)
+
 ## License
 
 GPLv3 - Maciej Sypień
diff --git a/gruvbox-tpm.tmux b/gruvbox-tpm.tmux
index 4f7693b..99849a9 100755
--- a/gruvbox-tpm.tmux
+++ b/gruvbox-tpm.tmux
@@ -1,27 +1,30 @@
 #!/usr/bin/env bash
 
-CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-THEME_OPTION="@tmux-gruvbox"
-DEFAULT_THEME="dark"
+SCRIPT_SRC="$(dirname "${BASH_SOURCE[${#BASH_SOURCE[@]} - 1]}")"
+readonly SCRIPT_SRC
+CURRENT_DIR=$(cd "${SCRIPT_SRC}" >/dev/null 2>&1 && pwd)
+readonly CURRENT_DIR
+readonly THEME_OPTION="@tmux-gruvbox"
+readonly DEFAULT_THEME="dark"
 
 get_theme() {
-    local option="$1"
-    local default_value="$2"
-    local option_value
-    option_value=$(tmux show-option -gqv "$option")
-    if [ -z "$option_value" ]; then
-        echo "$default_value"
-    else
-        echo "$option_value"
-    fi
+  local option="$1"
+  local default_value="$2"
+  local option_value
+  option_value=$(tmux show-option -gqv "$option")
+  if [ -z "$option_value" ]; then
+    echo "$default_value"
+  else
+    echo "$option_value"
+  fi
 }
 
 main() {
-    local theme
-    theme=$(get_theme "$THEME_OPTION" "$DEFAULT_THEME")
-    tmux source-file "$CURRENT_DIR/tmux-gruvbox-${theme}.conf"
+  local theme
+  theme=$(get_theme "$THEME_OPTION" "$DEFAULT_THEME")
+  tmux source-file "$CURRENT_DIR/tmux-gruvbox-${theme}.conf"
 }
 
-main
+main "$@"
 
-# vi: ft=bash
+# vim: ai et ft=bash