use Travis SVG badges in Pkg.generate

Travis now supports SVG badges!
http://blog.travis-ci.com/2014-03-20-build-status-badges-support-svg/
updated README to use Travis SVG badge
Update microbenchmark gitignore

Updated to ignore new path for fortran modules
zero, one: convert from Int instead of Float64 [fix #6461].
Merge pull request #6229 from jonasrauber/master

Travis SVG badges
Add getindex method for Bidiagonal matrix type.

A Bidiagonal matrix is now printed correctly in an interactive session.
Merge pull request #6469 from goriccardo/master

Add getindex method for Bidiagonal matrix type.