Improve makefile

script/validate-misspell.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+SCRIPT_DIR="$( cd "$( dirname "${0}" )" && pwd -P)"
+files=()
+while IFS='' read -r line; do files+=("$line"); done < <(git ls-files "${SCRIPT_DIR}"/../'docs/*.md' "${SCRIPT_DIR}"/../*.md | grep -v "CHANGELOG.md")
+
+errors=()
+for f in "${files[@]}"; do
+	# we use source text here so we also check spelling of variable names
+	failedSpell=$(misspell -source=text -i "internetbs" "$f")
+	if [ "$failedSpell" ]; then
+		errors+=( "$failedSpell" )
+	fi
+done
+
+if [ ${#errors[@]} -eq 0 ]; then
+	echo 'Congratulations!  All Go source files and docs have been checked for common misspellings.'
+else
+	{
+		echo "Errors from misspell:"
+		for err in "${errors[@]}"; do
+			echo "$err"
+		done
+		echo
+		echo 'Please fix the above errors. You can test via "misspell" and commit the result.'
+		echo
+	} >&2
+	false
+fi