docs: add missing getApplicationName() definitiion

# and use same order as in the .d.ts file

deviceinfo.js.flow

@@ -9,6 +9,7 @@ declare module.exports: {
   getSystemName: () => string,
   getSystemVersion: () => string,
   getBundleId: () => string,
+  getApplicationName: () => string,
   getBuildNumber: () => string,
   getVersion: () => string,
   getReadableVersion: () => string,
@@ -17,18 +18,18 @@ declare module.exports: {
   getDeviceLocale: () => string,
   getDeviceCountry: () => string,
   getTimezone: () => string,
+  getInstanceID: () => string,
   isEmulator: () => boolean,
   isTablet: () => boolean,
   is24Hour: () => boolean,
   isPinOrFingerprintSet: () => (cb: (isPinOrFingerprintSet: boolean) => void) => void,
-  getAPILevel: () => number,
-  getInstanceID: () => string,
-  getPhoneNumber: () => ?string,
   getFirstInstallTime: () => number,
   getLastUpdateTime: () => number,
   getSerialNumber: () => string,
+  getAPILevel: () => number,
   getIPAddress: () => Promise<string>,
   getMACAddress: () => Promise<string>,
+  getPhoneNumber: () => ?string,
   getCarrier: () => string,
   getTotalMemory: () => number,
   getMaxMemory: () => number,