[ci skip] Doxygen update (#92)

Author: doyubkim

doc/doxygen/main.md

@@ -1,11 +1,13 @@
-Jet framework is a fluid simulation engine SDK for computer graphics applications that was created by Doyub Kim as part of the book, ["Fluid Engine Development"](https://www.crcpress.com/Fluid-Engine-Development/Kim/p/book/9781498719926). The code is built on C++11 and can be compiled with commonly available compilers such as g++, clang, and Visual Studio. Currently tested platforms are macOS (10.10 or later), Ubuntu (14.04 or later), and Windows (Visual Studio 2015).
+Jet framework is a fluid simulation engine SDK for computer graphics applications that was created by Doyub Kim as part of the book, ["Fluid Engine Development"](https://www.crcpress.com/Fluid-Engine-Development/Kim/p/book/9781498719926). The code is built on C++11 and can be compiled with most of the commonly available compilers such as g++, clang++, or Microsoft Visual Studio. Jet currently supports macOS (10.10 or later), Ubuntu (14.04 or later), and Windows (Visual Studio 2015 or later). Other untested platforms that support C++11 also should be able to build Jet.
 
 ### Key Features
+* Basic math and geometry operations and data structures
+* Spatial query accelerators
 * SPH and PCISPH fluid simulators
 * Stable fluids-based smoke simulator
 * Level set-based liquid simulator
 * PIC, FLIP, and APIC fluid simulators
-* Upwind, ENO and FMM level set solvers
+* Upwind, ENO, and FMM level set solvers
 * Converters between signed distance function and triangular mesh
 
 Every simulator has both 2-D and 3-D implementations.