增加导出图片功能，修复bug

v0.0.7

update building script

fix some bugs

v0.0.6

auto detect encoding of txt/json file

v0.0.5

fix some bugs

MdxConverter v0.0.4

action for meeting invalid words

MdxConverter v0.0.3

output a warning message when word was not found in mdx

MdxConverter v0.0.2

improve the reading for txt file

MdxConverter v0.0.1

first version