message: Fix readme code examples for RegularExpression
diff: @@ -197,12 +197,12 @@ that takes two arguments:
  So to create a new scalar for a given regex, you will do this:
  ```
  -const MyRegexType = new RegexType('MyRegexType', /^ABC$/);
  +const MyRegexType = new RegularExpression('MyRegexType', /^ABC$/);
  ```
  Now `MyRegexType` is your new GraphQL scalar type that will enforce a value of, in this case, "ABC".
  -Add your new scalar type to your esolver map:
  +Add your new scalar type to your resolver map:
  ```
  export default {
  @@ -328,7 +328,7 @@ A `GraphQLScalarType` object generator that takes two arguments:
  * `regex` - The regex to be used to check against any values for fields with this new type
  ```
  -const MyRegexType = new RegexType('MyRegexType', /^ABC$/);
  +const MyRegexType = new RegularExpression('MyRegexType', /^ABC$/);
  ```
  ## What's this all about?
  