Updated postInstall script and readme.

README.md

@@ -16,26 +16,27 @@ npm install zxp-provider
 
 # Usage
 
-zxp-provider has a simple interface for calling ZXPSignCmd. Most users will want to use the 'bin' property, which will provide the zxp binary appropriate to your OS.
+zxp-provider has a simple interface for calling ZXPSignCmd. Most users will want to call zxp-provider with no arguments. This will return the latest version of ZXPSignCmd, for your current running operating system.
 
 ```javascript
-var zxp = require('zxp-provider').bin;
+const zxpProvider = require('zxp-provider');
+const zxp = zxpProvider(); // returns the lastest version for the current operation system
 ```
 
-If you would like to manually choose the executable, zxp-provider provides an interface for that as well.
+If you would like to manually choose the version of ZXPSignCmd, an interface is provided for that. Please see CEP-Resources if you're unsure what versions are available. If you would like, zxp-provider also contains an Array of supported versions.
 
 ```javascript
-var zxpWin32 = require('zxp-provider').win32;
+const chosenVersion = zxpProvider.supportedVersions[0]; // select the oldest version of ZXPSignCmd
+const zxp = zxpProvider({ version: chosenVersion });
+```
 
-var zxpWin64 = require('zxp-provider').win64;
+If you would like to manually select the os, you can do that as well. zxp-provider exposes an object containing all of the supported versions.
 
-var zxpOsx = require('zxp-provider').osx;
+```javascript
+const win64 = zxpProvider.supportedPlatforms.win64; // manually select windows 64 bit
+const zxp = zxpProvider({ os: win64 })
 ```
 
 # Notes
 
-zxp-provider v1.0.x - ZxpSignCmd v3.0.30
-
-zxp-provider v1.1.x - ZxpSignCmd v4.0.7
-
 [CEP-Resources](https://github.com/Adobe-CEP/CEP-Resources)

postInstall.js

@@ -1,16 +1,31 @@
 'use strict';
 
+const util = require('util');
 const fs = require('fs');
 const path = require('path');
 const os = require('os');
+const readdir = util.promisify(fs.readdir);
+const chmod = util.promisify(fs.chmod);
 
-if (os.type() === 'Darwin') {
-    console.log('Updating permissions for /bin/osx...');
-    fs.chmod(path.resolve('./bin/osx/ZXPSignCmd'), '755', function (err) {
-        if (err) {
-            throw err;
-        } else {
-            console.log('Permissions for /bin/osx set to 755.');
-        }
-    });
-}
+const ZXP_SIGN_CMD = 'ZXPSignCmd';
+const BIN_DIR = path.resolve('./bin');
+const PERM_CODE = '755';
+
+const chmodBinary = async (version) => {
+    const zxpPath = path.join(BIN_DIR, version, 'osx', ZXP_SIGN_CMD);
+    await chmod(zxpPath, PERM_CODE);
+    console.log(ZXP_SIGN_CMD + ' perms set to ' + PERM_CODE + ' at: ' + zxpPath);
+};
+
+(async () => {
+    if (os.type() === 'Darwin') {
+        console.log('Updating permissions for osx binaries.');
+        const versionDirectories = await readdir(BIN_DIR);
+        const chmodSet = [];
+        versionDirectories.forEach((version) => {
+            chmodSet.push(chmodBinary(version));
+        });
+
+        await Promise.all(chmodSet);
+    }
+})();