Added tutorials "06 - Descriptor Sets" and "07 - Uniform Buffers". Added functions for projection matrices generation to Tools. Added function for loading images from files (with stb_image library). Updated README.md file with description of Tutorial06.

Project/Tutorial06/Data06/shader.frag

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+// Copyright 2016 Intel Corporation All Rights Reserved
+// 
+// Intel makes no representations about the suitability of this software for any purpose.
+// THIS SOFTWARE IS PROVIDED ""AS IS."" INTEL SPECIFICALLY DISCLAIMS ALL WARRANTIES,
+// EXPRESS OR IMPLIED, AND ALL LIABILITY, INCLUDING CONSEQUENTIAL AND OTHER INDIRECT DAMAGES,
+// FOR THE USE OF THIS SOFTWARE, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY
+// RIGHTS, AND INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+// Intel does not assume any responsibility for any errors which may appear in this software
+// nor any responsibility to update it.
+
+#version 430
+
+layout(set=0, binding=0) uniform sampler2D u_Texture;
+
+layout(location = 0) in vec2 v_Texcoord;
+
+layout(location = 0) out vec4 o_Color;
+
+void main() {
+  o_Color = texture( u_Texture, v_Texcoord );
+}