1.1.1 Bugfix release (2015-04-19)

Bugfixes

• Added viewBox attribute to SVG stacks (svg-sprite #73)
• Fixed example document path resolution bug (svg-sprite #70)
• Allow negative viewBox values (svg-sprite #72)
• Fixed symbol example document (svg-sprite #71)
• Improved error log for invalid SVG files (svg-sprite #69)

Enhancements

• Compatible with svg-sprite 1.1.1
• Updated dependencies & development dependencies