update travis.yml to include 0.8
update travis.yml to include 0.8

rc0x03/libxmljs,Konsus/libxml,rc0x03/libxmljs,libxmljs/libxmljs,rchipka/libxmljs,Konsus/libxml,polotek/libxmljs,sergeche/libxmljs,CodeFridge/libxmljs_mem,improvisio-software/libxmljs,Visya/libxmljs,hildjj/libxmljs,polotek/libxmljs,Konsus/libxml,sergeche/libxmljs,Visya/libxmljs,rchipka/libxmljs,improvisio-software/libxmljs,improvisio-software/libxmljs,CodeFridge/libxmljs_mem,rc0x03/libxmljs,gagern/libxmljs,libxmljs/libxmljs,polotek/libxmljs,hildjj/libxmljs,sergeche/libxmljs,libxmljs/libxmljs,gagern/libxmljs,hildjj/libxmljs,gagern/libxmljs,CodeFridge/libxmljs_mem,rchipka/libxmljs,Visya/libxmljs