message: Add syntax highlighting
  GitHub can now syntax highlight GraphQL code
diff: @@ -227,7 +227,7 @@ In order to theme the editor portions of the interface, you can supply a `editor
  **Query**
  GraphQL queries declaratively describe what data the issuer wishes to fetch from whoever is fulfilling the GraphQL query.
  -```
  +```graphql
  query FetchSomeIDQuery($someId: String!) {
  human(id: $someId) {
  name
  @@ -262,7 +262,7 @@ const schema = new GraphQLSchema({
  });
  ```
  then the following mutation queries are possible:
  -```
  +```graphql
  mutation TestMutation {
  first: immediatelyChangeTheNumber(newNumber: 1) {
  theNumber
  @@ -272,7 +272,7 @@ mutation TestMutation {
  Read more in [this mutation test in `graphql-js`](https://github.com/graphql/graphql-js/blob/master/src/execution/__tests__/mutations-test.js).
  [Relay](https://facebook.github.io/relay) has another good example using a common pattern for composing mutations. Given the following GraphQL Type Definitions,
  -```
  +```graphql
  input IntroduceShipInput {
  factionId: ID!
  shipName: String!
  @@ -286,7 +286,7 @@ type IntroduceShipPayload {
  }
  ```
  mutation calls are composed as such:
  -```
  +```graphql
  mutation AddBWingQuery($input: IntroduceShipInput!) {
  introduceShip(input: $input) {
  ship {
  @@ -312,7 +312,7 @@ Read more from [Relay Mutation Documentation](https://facebook.github.io/relay/d
  **Fragment**
  Fragments allow for the reuse of common repeated selections of fields, reducing duplicated text in the document. Inline Fragments can be used directly within a selection to condition upon a type condition when querying against an interface or union. Therefore, instead of the following query:
  -```
  +```graphql
  {
  luke: human(id: "1000") {
  name
  @@ -326,7 +326,7 @@ Fragments allow for the reuse of common repeated selections of fields, reducing
  ```
  using fragments, the following query is possible.
  -```
  +```graphql
  {
  luke: human(id: "1000") {
  ...HumanFragment
  