message: Changed 'SubTitle' to 'Subtitle' in index.d.ts
  Fix based on issuecomment
diff: @@ -126,7 +126,7 @@ declare module "native-base" {
  /**
  * see Widget Subtitle/index.js
  */
  - interface SubTitle {
  + interface Subtitle {
  style?: ReactNative.ViewStyle | Array<ReactNative.ViewStyle>;
  }
  /**
  @@ -823,7 +823,7 @@ declare module "native-base" {
  */
  export class Title extends React.Component<NativeBase.Title, any> {}
  - export class SubTitle extends React.Component<NativeBase.SubTitle, any> {}
  + export class Subtitle extends React.Component<NativeBase.Subtitle, any> {}
  /**
  * NativeBase.Button
  