bugfix; ensure example is correctly symlinked

packages/create-freesewing-pattern/package.json

@@ -14,7 +14,8 @@
     "test": "ava -v && standard *.js lib/*.js"
   },
   "engines": {
-    "node": ">=4"
+    "node": ">=8",
+    "npm": ">=5"
   },
   "keywords": [
     "react",

packages/create-freesewing-pattern/template/default/example/package.json

@@ -9,7 +9,7 @@
     "react": "^16.4.1",
     "react-dom": "^16.4.1",
     "react-scripts": "^1.1.4",
-    "{{name}}": "file:.."
+    "{{name}}": "{{#if yarn}}link:..{{else}}file:..{{/if}}"
   },
   "scripts": {
     "start": "react-scripts start",

packages/create-freesewing-pattern/template/default/package.json

@@ -8,6 +8,10 @@
   "main": "dist/index.js",
   "module": "dist/index.es.js",
   "jsnext:main": "dist/index.es.js",
+  "engines": {
+    "node": ">=8",
+    "npm": ">=5"
+  },
   "scripts": {
     "test": "cross-env CI=1 react-scripts test --env=jsdom",
     "test:watch": "react-scripts test --env=jsdom",

packages/create-freesewing-pattern/template/typescript/example/package.json

@@ -9,7 +9,7 @@
     "react": "^16.4.1",
     "react-dom": "^16.4.1",
     "react-scripts": "^1.1.4",
-    "{{name}}": "file:.."
+    "{{name}}": "{{#if yarn}}link:..{{else}}file:..{{/if}}"
   },
   "scripts": {
     "start": "react-scripts start",

packages/create-freesewing-pattern/template/typescript/package.json

@@ -8,6 +8,10 @@
   "main": "dist/index.js",
   "module": "dist/index.es.js",
   "jsnext:main": "dist/index.es.js",
+  "engines": {
+    "node": ">=8",
+    "npm": ">=5"
+  },
   "scripts": {
     "test": "cross-env CI=1 react-scripts-ts test --env=jsdom",
     "test:watch": "react-scripts-ts test --env=jsdom",