feature: add include option and amended the default value of exclude in the document

[IceApriler]

To selectively convert files, add this option.

• include (Array or Regexp) If include is set, only matching files will be converted, for example, only files under 'src/mobile'
  • If the value is regexp, the matching file will be included, otherwise it will be excluded.
  • If value is array, the elements of the array are regexp.

exclude andinclude can be set together, and the intersection of the two rules will be taken.

At the same time amended the default value of exclude in the document is undefined.

[fireswork]

@KODerFunk When can i use this option? just support exclude is so stupid

[IceApriler]

Hi, buddy, when can you merge this pull request ? I think it's very helpful. @KODerFunk

[KODerFunk]

@fireswork yes! Need some days for recheck master and release new version) @IceApriler hi! Sorry for delay, yes! 感谢您的贡献。