prettier 2

Summary:
Quick notes:

- This looks worse than it is. It adds mandatory parentheses to single argument lambdas. Lots of outrage on Twitter about it, personally I'm {emoji:1f937_200d_2642} about it.
- Space before function, e.g. `a = function ()` is now enforced. I like this because both were fine before.
- I added `eslint-config-prettier` to the config because otherwise a ton of rules conflict with eslint itself.

Close https://github.com/facebook/flipper/pull/915

Reviewed By: jknoxville

Differential Revision: D20594929

fbshipit-source-id: ca1c65376b90e009550dd6d1f4e0831d32cbff03

desktop/app/src/utils/androidContainerUtilityInternal.tsx

@@ -61,7 +61,7 @@ export function _push(
     deviceId,
     app,
     `echo "${contents}" > '${filename}' && chmod 644 '${filename}'`,
-  ).then(_ => undefined);
+  ).then((_) => undefined);
 }
 
 export function _pull(
@@ -83,8 +83,8 @@ function executeCommandAsApp(
   return client
     .shell(deviceId, `echo '${command}' | run-as '${app}'`)
     .then(adbkit.util.readAll)
-    .then(buffer => buffer.toString())
-    .then(output => {
+    .then((buffer) => buffer.toString())
+    .then((output) => {
       if (output.match(appNotDebuggableRegex)) {
         throw new Error(
           `Android app ${app} is not debuggable. To use it with Flipper, add android:debuggable="true" to the application section of AndroidManifest.xml`,