Merge pull request #163 from biller23/patch-1

Examples: typo in ImGui_ImplGlFwGL3_KeyCallback() forward-declaration.

examples/opengl3_example/imgui_impl_glfw_gl3.h

@@ -16,5 +16,5 @@ bool        ImGui_ImplGlfwGL3_CreateDeviceObjects();
 // You can also handle inputs yourself and use those as a reference.
 void        ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
 void        ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
-void        ImGui_ImplGlFwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+void        ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
 void        ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c);