Merge pull request #36 from seemk/master

FT_New_Face path string fix
Updated examples
Merge pull request #37 from seemk/master

Removed deprecated functions
Upgraded to latest Piston

* Updated examples
* Ignoring Cargo.lock
Merge branch 'master' of https://github.com/PistonDevelopers/freetype-rs
Merge pull request #38 from bvssvni/master

Upgraded to latest Piston
Merge branch 'master' of https://github.com/PistonDevelopers/freetype-rs

Conflicts:
	examples/single_glyph/single_glyph.rs
	examples/single_glyph_ffi/single_glyph_ffi.rs
Merge pull request #39 from Coeuvre/master

Updated examples
Use reference counting functions to manage `FT_Library`
Merge pull request #41 from Coeuvre/master

Use reference counting functions to manage `FT_Library`