update changelog bits

CHANGELOG.md

@@ -18,7 +18,7 @@ tests.
   strictly validated. For example, before you were able to send in a string
   value of `"180"` for the `newCommandTimeout` capability. Now you must send in
   an actual JSON number, e.g., `180`.
-- Remove the 'autoLaunch' capability since it added a significant
+- Remove the `autoLaunch` capability since it added a significant
   amount of complexity to the startup flow and Appium shouldn't be responsible
   for this kind of use case
 - Remove long-deprecated `name` locator strategy
@@ -31,7 +31,7 @@ tests.
 #### Android
 - enable navigating to an android URI via the set url driver methods, e.g.,
   driver.get('content://contacts/people/1')
-- fix some adb issues in Windows (e.g., signWithCustomCert, sdk binary names)
+- fix some adb issues in Windows (e.g., `signWithCustomCert`, sdk binary names)
 - fix issue with UIWatcher ssl certificate errors
 - if you want to install all chromedrivers, use --chromedriver-install-all; if
   you want to install a specific chromedriver version, use
@@ -41,13 +41,16 @@ tests.
 - The `ANDROID_ADB_SERVER_PORT` environment variable has been removed in favor
   of the `adbPort` desired capability, which does the same thing.
 
-#### Internal changes
+#### Non-exhaustive examples of internal changes
+- see the [developer's
+  overview](/docs/en/contributing-to-appium/developers-overview.md) for
+  a fuller description of Appium 1.5 from a developer's perspective
 - get rid of reset.sh and various other appium build tools in favor of a simple
   npm install
 - split apart Appium into various smaller modules each with their own
   repositories and NPM packages
 - use gulp instead of grunt
-- use babel to transpile from
+- use babel to transpile from es2015+ to standard es5 code
 - get rid of .appiumconfig.json
 
 CHANGES IN VERSION 1.4.16 (from 1.4.15)