Add Code Climate badge to README
stat_spec: Use `let`.
Fixed problem with rspec and rspec-longrun.
Merge branch 'master' of github.com:SciRuby/nmatrix
Merge branch 'remove-instance-variables-stat-spec' of https://github.com/duggiefresh/nmatrix into duggiefresh_255
Merge pull request #236 from agarie/code_climate_badge

Add Code Climate badge to README
Update history for release
Version bump.
Added fix for yale matrix inject behaviour
Uses Bundler's GemHelper regarding `rake install`.
Updated the NMatrix RSpec spec for new constructor
Added homogeneous transformation matrix generation methods (optional)
Forgot these in previous commit
Fixed some API problems related to garbage collection. This restores
compatibility with SciRuby's rb-gsl fork.
Updated history for rb-gsl and API fixes
Fixed some dumb problems in the homogeneous code that I missed before
somehow.
Merge pull request #259 from yoongkang/yalefix

Added fix for yale matrix inject behaviour #208
Merge pull request #260 from duggiefresh/use-bundler-rake-task

Uses Bundler's GemHelper regarding `rake install`.
Updated history and merged #257
Merge branch 'master' of https://github.com/SciRuby/nmatrix