Merge #743

743: Update deps & add trailing space linter r=poteto a=poteto

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## Add/Update/Remove <CompanyName>

- [ ] I have read the [contributing guidelines](https://github.com/poteto/hiring-without-whiteboards/blob/master/CONTRIBUTING.md)
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Co-authored-by: Lauren Tan <laurent@netflix.com>
Co-authored-by: Lauren Tan <poteto@users.noreply.github.com>

.nvmrc

@@ -0,0 +1 @@
+11.10.0

.travis.yml

@@ -1,7 +1,7 @@
 ---
 language: node_js
 node_js:
-  - "7"
+  - "11"
 
 sudo: false
 

package.json

@@ -4,7 +4,7 @@
   "description": "Companies that don't have a broken hiring process",
   "main": "index.js",
   "engines": {
-    "node": "7.x"
+    "node": "11.x"
   },
   "scripts": {
     "test": "node ./node_modules/remark-cli/cli.js README.md -f"
@@ -20,20 +20,22 @@
   "license": "MIT",
   "homepage": "https://github.com/poteto/hiring-without-whiteboards#readme",
   "dependencies": {
-    "remark-cli": "^3.0.0",
+    "remark-cli": "^6.0.1",
-    "remark-lint": "^6.0.0",
+    "remark-lint": "^6.0.4",
-    "remark-lint-alphabetize-lists": "^2.0.0",
+    "remark-lint-alphabetize-lists": "^2.0.1",
     "remark-lint-hiring-without-whiteboards-links": "^0.3.2",
-    "remark-lint-no-tabs": "^1.0.0",
+    "remark-lint-no-tabs": "^1.0.2",
-    "remark-lint-no-url-trailing-slash": "^3.0.0",
+    "remark-lint-no-trailing-spaces": "^2.0.0",
-    "remark-lint-unordered-list-marker-style": "^1.0.0",
+    "remark-lint-no-url-trailing-slash": "^3.0.1",
-    "remark-preset-lint-recommended": "^2.0.0"
+    "remark-lint-unordered-list-marker-style": "^1.0.2",
+    "remark-preset-lint-recommended": "^3.0.2"
   },
   "remarkConfig": {
     "plugins": [
       "lint",
       "remark-preset-lint-recommended",
       "remark-lint-no-tabs",
+      "remark-lint-no-trailing-spaces",
       "remark-lint-unordered-list-marker-style",
       "remark-lint-no-url-trailing-slash",
       "remark-lint-hiring-without-whiteboards-links",