Misc comments, removed duplicated IM_ARRAYSIZE macro in imgui_demo.cpp (it is now declared in imgui.h)

imgui.cpp

@@ -8,7 +8,7 @@
 // Gallery (please post your screenshots/video there!): https://github.com/ocornut/imgui/issues/1269
 // Developed by Omar Cornut and every direct or indirect contributors to the GitHub.
 // This library is free but I need your support to sustain development and maintenance.
-// If you work for a company, please consider financial support, e.g: https://www.patreon.com/imgui
+// If you work for a company, please consider financial support, see Readme. For individuals: https://www.patreon.com/imgui
 
 /*
 

imgui_demo.cpp

@@ -7,16 +7,16 @@
 // During development, you can call ImGui::ShowDemoWindow() in your code to learn about various features of ImGui. Have it wired in a debug menu!
 // Removing this file from your project is hindering access to documentation for everyone in your team, likely leading you to poorer usage of the library.
 // Note that you can #define IMGUI_DISABLE_DEMO_WINDOWS in imconfig.h for the same effect.
-// If you want to link core ImGui in your public builds but not those demo windows, #define IMGUI_DISABLE_DEMO_WINDOWS in imconfig.h and those functions will be empty.
-// For any other case, if you have ImGui available you probably want this to be available for reference and execution.
+// If you want to link core ImGui in your final builds but not those demo windows, #define IMGUI_DISABLE_DEMO_WINDOWS in imconfig.h and those functions will be empty.
+// In other situation, when you have ImGui available you probably want this to be available for reference and execution.
 // Thank you,
 // -Your beloved friend, imgui_demo.cpp (that you won't delete)
 
-// Message to beginner C/C++ programmer about the meaning of 'static': in this demo code, we frequently we use 'static' variables inside functions. 
-// We do this as a way to gather code and data in the same place, make the demo code faster to read, faster to write, and smaller. A static variable persist across calls, 
-// so it is essentially like a global variable but declared inside the scope of the function.
+// Message to beginner C/C++ programmers. About the meaning of 'static': in this demo code, we frequently we use 'static' variables inside functions. 
+// We do this as a way to gather code and data in the same place, just to make the demo code faster to read, faster to write, and use less code. 
+// A static variable persist across calls, so it is essentially like a global variable but declared inside the scope of the function. 
 // It also happens to be a convenient way of storing simple UI related information as long as your function doesn't need to be reentrant or used in threads.
-// This may be a pattern you want to use in your code (simple is beautiful!), but most of the real data you would be editing is likely to be stored outside your function.
+// This might be a pattern you occasionally want to use in your code, but most of the real data you would be editing is likely to be stored outside your function.
 
 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
 #define _CRT_SECURE_NO_WARNINGS
@@ -52,18 +52,17 @@
 #pragma GCC diagnostic ignored "-Wdouble-promotion"             // warning: implicit conversion from 'float' to 'double' when passing argument to function
 #pragma GCC diagnostic ignored "-Wconversion"                   // warning: conversion to 'xxxx' from 'xxxx' may alter its value
 #if (__GNUC__ >= 6)
-#pragma GCC diagnostic ignored "-Wmisleading-indentation"       // warning: this 'if' clause does not guard this statement      // GCC 6.0+ only. See #883 on github.
+#pragma GCC diagnostic ignored "-Wmisleading-indentation"       // warning: this 'if' clause does not guard this statement      // GCC 6.0+ only. See #883 on GitHub.
 #endif
 #endif
 
-// Play it nice with Windows users. Notepad in 2015 still doesn't display text data with Unix-style \n.
+// Play it nice with Windows users. Notepad in 2017 still doesn't display text data with Unix-style \n.
 #ifdef _WIN32
 #define IM_NEWLINE "\r\n"
 #else
 #define IM_NEWLINE "\n"
 #endif
 
-#define IM_ARRAYSIZE(_ARR)  ((int)(sizeof(_ARR)/sizeof(*_ARR)))
 #define IM_MAX(_A,_B)       (((_A) >= (_B)) ? (_A) : (_B))
 
 //-----------------------------------------------------------------------------