Adding docs, specs and fixing object returned

docs/api/app.md

@@ -762,20 +762,7 @@ This method can only be called before app is ready.
 
 ### `app.getAppMemoryInfo()`
 
-Returns `Object[]`:
-
-* `pid` Integer - The process id for which memory info is collected for
-  * `workingSetSize` Integer - The amount of memory currently pinned to actual physical
-    RAM.
-  * `peakWorkingSetSize` Integer - The maximum amount of memory that has ever been pinned
-    to actual physical RAM.
-  * `privateBytes` Integer - The amount of memory not shared by other processes, such as
-    JS heap or HTML content.
-  * `sharedBytes` Integer - The amount of memory shared between processes, typically
-    memory consumed by the Electron code itself
-
-Returns an object giving memory usage statistics about all the processes associated with 
-the app. Note that all statistics are reported in Kilobytes.
+Returns [ProcessMemoryInfo[]](structures/process-memory-info.md):  Array of `ProcessMemoryInfo` objects that correspond to memory usage statistics of all the processes associated with the app.
 
 ### `app.setBadgeCount(count)` _Linux_ _macOS_
 

docs/api/structures/memory-info.md

@@ -0,0 +1,12 @@
+# MemoryInfo Object
+
+* `workingSetSize` Integer - Process id of the process.
+* `workingSetSize` Integer - The amount of memory currently pinned to actual physical RAM.
+* `peakWorkingSetSize` Integer - The maximum amount of memory that has ever been pinned
+  to actual physical RAM.
+* `privateBytes` Integer - The amount of memory not shared by other processes, such as
+  JS heap or HTML content.
+* `sharedBytes` Integer - The amount of memory shared between processes, typically
+  memory consumed by the Electron code itself
+
+Note that all statistics are reported in Kilobytes.

docs/api/structures/process-memory-info.md

@@ -0,0 +1,4 @@
+# ProcessMemoryInfo Object
+
+* `pid` Integer - Process id of the process.
+* `memory` MemoryInfo - Memory information of the process.