Convert some blog stories to tips

blog_posts/eslint-refactor-for-in.md

@@ -1,6 +1,6 @@
 ---
-title: Refactoring your for...in loops to avoid ESLint warnings
-type: story
+title: "Tip: Refactoring your for...in loops to avoid ESLint warnings"
+type: tip
 tags: javascript,array,iterator,eslint
 authors: chalarangelo
 cover: blog_images/copy-text-to-clipboard-with-javascript.jpg

blog_posts/github-co-authors.md

@@ -1,6 +1,6 @@
 ---
-title: How can I add multiple authors to a commit?
-type: question
+title: "Tip: How to add multiple authors to a commit"
+type: tip
 tags: git,github,programming,webdev
 authors: chalarangelo
 cover: blog_images/book-chair.jpg

blog_posts/javascript-swap-two-variables.md

@@ -1,6 +1,6 @@
 ---
-title: How can I swap two variables in JavaScript?
-type: question
+title: "Tip: How to swap two variables in JavaScript"
+type: tip
 tags: javascript,array,variables
 authors: chalarangelo
 cover: blog_images/javascript-swap-two-variables.jpg

blog_posts/nodejs-chrome-debugging.md

@@ -1,6 +1,6 @@
 ---
-title: Debugging Node.js using Chrome Developer Tools
-type: story
+title: "Tip: Debugging Node.js using Chrome Developer Tools"
+type: tip
 tags: javascript,node,debugging
 authors: chalarangelo
 cover: blog_images/nodejs-chrome-debugging.jpg

blog_posts/prefetching-resources.md

@@ -1,6 +1,6 @@
 ---
-title: Prefetching resources in the browser
-type: story
+title: "Tip: Prefetching resources in the browser"
+type: tip
 tags: webdev,html,browser
 authors: chalarangelo
 cover: blog_images/prefetching-resources.jpg