feat: add new types (#127)

<!--
Thanks for your interest in the project. Bugs filed and PRs submitted are appreciated!

Please make sure that you are familiar with and follow the Code of Conduct for
this project (found in the CODE_OF_CONDUCT.md file).

Also, please make sure you're familiar with and follow the instructions in the
contributing guidelines (found in the CONTRIBUTING.md file).

If you're new to contributing to open source projects, you might find this free
video course helpful: http://kcd.im/pull-request

Please fill out the information below to expedite the review and (hopefully)
merge of your pull request!
-->

<!-- What changes are being made? (What feature/bug is being fixed here?) -->
**What**:
Add Security contribution type, as mentioned in https://github.com/kentcdodds/all-contributors/issues/106 and implemented in https://github.com/kentcdodds/all-contributors/pull/107

Also added user-testing as introduced as part of https://github.com/kentcdodds/all-contributors/pull/97/files

<!-- Why are these changes necessary? -->
**Why**:
All contributors!

<!-- How were these changes implemented? -->
**How**:
Me

<!-- Have you done all of these things?  -->
**Checklist**:
<!-- add "N/A" to the end of each line that's irrelevant to your changes -->
<!-- to check an item, place an "x" in the box like so: "- [x] Documentation" -->
- [x] Documentation
- [ ] Tests - N/A
- [x] Ready to be merged <!-- In your opinion, is this ready to be merged as soon as it's reviewed? -->
- [x] Added myself to contributors table <!-- this is optional, see the contributing guidelines for instructions -->

<!-- feel free to add additional comments -->

README.md

@@ -133,11 +133,13 @@ Where `username` is the user's GitHub or Gitlab username, and `contribution` is
 - plugin: [🔌](# 'Plugin/utility libraries')
 - question: [💬](# 'Answering Questions')
 - review: [👀](# 'Reviewed Pull Requests')
+- security: [🛡](# 'Security')
 - talk: [📢](# 'Talks')
 - test: [⚠️](# 'Tests')
 - tool: [🔧](# 'Tools')
 - translation: [🌍](# 'Translation')
 - tutorial: [✅](# 'Tutorials')
+- tutorial: [📓](# 'User Testing')
 - video: [📹](# 'Videos')
 
 Please note that if you are using a self-hosted gitlab instance, before adding

src/util/contribution-types.js

@@ -66,6 +66,10 @@ const defaultTypes = function(repoType) {
       symbol: '👀',
       description: 'Reviewed Pull Requests',
     },
+    security: {
+      symbol: '🛡️',
+      description: 'Security',
+    },
     talk: {
       symbol: '📢',
       description: 'Talks',
@@ -87,6 +91,10 @@ const defaultTypes = function(repoType) {
       symbol: '✅',
       description: 'Tutorials',
     },
+    userTesting: {
+      symbol: '📓',
+      description: 'User Testing',
+    },
     video: {
       symbol: '📹',
       description: 'Videos',