added travis CI config
First attempt at yale slice setting. No tests yet.
Little bit of progress on yale slice-setting
Merge pull request #121 from cjfuller/add-ci

added travis CI config
Beginning of major yale refactoring. Removed itype globally.
Converted Yale each_with_indices to new iterator system. Included spec.
Fixed each_with_indices iteration for yale slices, added spec
updated gem post-install message to reflect that Debian/Ubuntu apt ATLAS now works so long as LAPACK is not also installed
Improvements to Yale refactoring. each_stored_with_indices now uses
STL-like iterators.
Added spec and #each_ordered_stored_with_indices, which does not yet
work.
Ordered iteration works for Yale (haven't tested slices)
Hopefully fixed ==, other iterator problems.
Fixed storage order iterators, added specs, added Ruby accessors
(protected) for the diagonal and non-diagonal iterators.
Fixed diagonal iteration within ordered iteration.
Added another spec, this one to address broken pretty_print for Yale
(caused by each_with_indices on each_row)
Found additional bug in yale slice_copy
Merge branch 'master' of github.com:SciRuby/nmatrix
Merge pull request #123 from cjfuller/gemspec-post-install-message-fix

Change gem post-install message to reflect that ATLAS installed through apt now works
Intermediate revision -- further refactoring of Yale. Almost working
ordered iterator.
fix storage mark functions to actually mark ruby objects in object dtype arrays.  Fixes #126.