Travis CI: Install gdb
Travis CI: Install gdb

priseborough/InertialNav,vergil1874/InertialNav,ek99800/InertialNav,flyingk/InertialNav,zlongshen/InertialNav,ek99800/InertialNav,vergil1874/InertialNav,flyingk/InertialNav,flyingk/InertialNav,ek99800/InertialNav,flyingk/InertialNav,priseborough/InertialNav,AlexHAHA/InertialNav,zlongshen/InertialNav,priseborough/InertialNav,priseborough/InertialNav,AlexHAHA/InertialNav,AlexHAHA/InertialNav,vergil1874/InertialNav,zlongshen/InertialNav