Disable Go 1.5.4 in Travis
Disable Go 1.5.4 in Travis

There is one failing test there now, a odd filesystem issue.

Since Go 1.7 is only "days" away, I'm not spending time debugging this.

anthonyfok/hugo,digitalcraftsman/hugo,gohugoio/hugo,tubo028/hugo,ffrizzo/hugo,fedelibre/hugo,jygastaud/hugo,mdhender/hugo,anthonyfok/hugo,gohugoio/hugo,mayah/hugo,anthonyfok/hugo,fedelibre/hugo,digitalcraftsman/hugo,tubo028/hugo,bogem/hugo,MarkDBlackwell/hugo,gohugoio/hugo,Zenithar/hugo,fedelibre/hugo,ffrizzo/hugo,mitchchn/hugo,fedelibre/hugo,MarkDBlackwell/hugo,mitchchn/hugo,bogem/hugo,mdhender/hugo,mdhender/hugo,jygastaud/hugo,Zenithar/hugo,mayah/hugo,mdhender/hugo