Update exercises to newest version of dependencies

[MichaelDeBoey]

Bump following packages to newest version:

 "dependencies": {
-    "apollo-client": "^0.5.0",
-    "graphql-anywhere": "^0.3.0",
-    "react": "^15.3.1",
-    "react-apollo": "^0.5.14",
-    "react-dom": "^15.3.1",
-    "react-router": "^2.8.0",
-    "styled-components": "^1.1.3",
-    "tachyons": "^4.3.1"

+   "apollo-client": "^1.1.1",
+    "graphql-anywhere": "^3.0.1",
+    "react": "^15.5.4",
+    "react-apollo": "^1.1.3",
+    "react-dom": "^15.5.4",
+    "react-router": "^4.1.1",
+    "styled-components": "^1.4.6",
+    "tachyons": "^4.7.1"
 },

[iurii-kyrylenko]

@MichaelDeBoey If anybody interested, I've upgraded the tutorial to the new apollo client and react router v4. See this repo. The commit history reflects the tutorial steps

[marktani]

Wow, that's amazing! This is tremendously helpful for the update we're planning, thanks 🙏