Add has_attribute? helper method
Push to version 0.2.0
Remove the build alias
Refactor attribute creation to same abstractionlvl
Remove setter for explicit nested attributes
Allow nested attributes to be optional
Bump to version 1.0.0
Remove rbx from travis, it couldn't be found
Add rbx to travis config
Add introduction to the readme

Just express the motivation behind bound and add a reference
to the Usage chapter for more details.
Add first incomplete example of the usage chapter
Add second part of the Usage chapter
Minor tweaks in README

[ci skip]
Merge pull request #11 from neopoly/usage-spike

Improve README
Implement equality on BoundClass
 Bump to version 1.0.1
Extract a caller class
Eliminate usage of public_send
Refactor get_attribute
Restructure set_attributes