message: Remove returns from paths, fix quotes
diff: @@ -78,14 +78,14 @@ You can specify the following rules in your `rules.yaml` file.
  | File: `get` | Get file metadata | Get file |
  | File: `delete` | N/A | Delete the file |
  -For simple allow/deny, you can return boolean values. This should be a simple javascript expression in a string.
  +For simple allow/deny, you can return boolean values (`true`/`false`) in a string.
  ``` yaml
  paths:
  /public:
  - list: 'return true'
  + list: 'true'
  /private:
  - list: 'return false'
  + list: 'false'
  ```
  (For any complex permissions using variables, you should use [functions](#functions)).
  @@ -177,9 +177,9 @@ functions:
  isOwner: 'return !!request.auth && request.auth["user-id"] === userId'
  paths:
  /:userId/:
  - list: isOwner(userId)
  + list: 'isOwner(userId)'
  /:userId/:fileId:
  - read: isOwner(userId)
  + read: 'isOwner(userId)'
  ```
  This rule will allow users to list their own file directory, and read their own files.
  @@ -207,10 +207,10 @@ Now, you can add the following functions to your `rules.yaml`:
  ``` yaml
  functions:
  - employedBy: "return !!request.auth && request.auth['company-id'] === companyId"
  + employedBy: 'return !!request.auth && request.auth["company-id"] === companyId'
  paths:
  /:companyId/:
  - list: "employedBy(companyId)"
  + list: 'employedBy(companyId)'
  /:companyId/:fileId:
  read: 'employedBy(companyId) && validToken()'
  write: 'employedBy(companyId)'
  