fix(loader): add missing babel-plugin (gregberge#50)

refactor: add missing babel plugin

Merge pull request gregberge#42 from smooth-code/option-keep-useless-…

…defs

feat: add option keepUselessDefs

Merge pull request gregberge#32 from smooth-code/improve-webpack-loader

feat: support url-loader & file-loader

feat: add ref option (gregberge#29)

Merge pull request gregberge#27 from smooth-code/improve-native-support

Improve React Native support

feat: add option to keeps IDs from SVG

Merge pull request gregberge#25 from smooth-code/webpack-usage

feat: simplify webpack usage

feat: add viewBox option that default to true

See e06e2fe

chore(release): 1.0.0