Merge pull request #19 from linquize/return-statement

Add the return statement at the end of main to fix warning
Merge pull request #20 from linquize/setenv

Support both MinGW and MSVC
Add Visual Studio ignore list
Add libcangjie2 Visual Studio project skeleton
Add sqlite3
libcangjie2 add reference sqlite3
Add the files to libcangjie2 project
Add libcangjie2_dbbuilder
Add libcangjie2_cli
Add libcangjie2_bench
Add test_cangjie
Add test_cangjiechar
Add test_cangjiecharlist
Merge branch 'extern-c-dllexport' into msvc-proj
Add cangjiecommon.h to libcangjie2.vcxproj
Add libcangjie_derivative_dll
Add Debug-DLL build configuration