Calculate frame-rate for the user, as a purely luxurious feature ...

..and to reduce sample code size a little.

Minor formatting tweaks, comments

Examples: changed default background color.

Warning fixes for 64-bit architectures

Examples: more comments on loading fonts.

Renamed FontAtlas to Fonts. Further cleanup/comments.

ImFontAtlas allows loading multiple fonts into same texture. Revamped new init API for 1.30

Removed PixelCenterOffset, uncesssary

Merge remote-tracking branch 'upstream/master' into 2015-01-truetype ...

Conflicts:
	imgui.cpp
	imgui.h

Examples: Added a color slider for the background color + tweak first example use of button.s

ImFont::GetTextureData API allow to retrieve 8/32 bits data + lazily load defaults font ...

Examples: OpenGL3 and DirectX11 back to using 32-bits texture solely for
ease of integration.

Mde it optional to new() io.Font - however it stills needs to be loaded.

TAB to spaces

Examples: all supports TextureID in renderer, added LoadFontTexture() function.

Cleanup extra_fonts/ folder

Loading TTF file with stb_truetype. Broke setup API slightly. Font baked, packed with space for custom data. Embeds compressed ProggyClean.

New and better Set[Next]Window(Pos|Size|Collapsed) API. ...

Removed rarely useful SetNewWindowDefaultPos() in favor of new API.

Examples: adding title to the top of each examples. Cleaning up file headers.

Examples: removed LICENSE file from MSVC project.

DirectX9/DirectX11 example: fixed window initially showing an hourglass cursor.

Example apps: accumulate mouse wheel to accodomate for slow framerate.

DirectX11 example: further tweaks/massaging (-15 lines). Syncing example.

Removed Microsoft IME handler in examples, too confusing. Moved to imgui.cpp instruction block.

Tab->Spaces :(

Added DirectX11 example application (code is too long!)

Examples: created single .sln solution for all example projects.

Example code: warning fix + comments.

Fixed compatibility with std::vector if user decide to #define ImVector

OpenGL/DirextX examples: comments and tweaks.

OpenGL/DirectX examples: support for international text input in UTF-8 + implement ImeSetInputScreenPosFn on Windows.