Use dirname(@__FILE__) instead of Pkg.dir

This allows installing the package elsewhere.

Add testing against 0.5 to Travis - this runs the most
recent RC now, release once final tags are done.

Author: tkelman

.travis.yml

@@ -4,6 +4,7 @@ os:
 julia:
     - 0.3
     - 0.4
+    - 0.5
     - nightly
 notifications:
     email: false

test/runtests.jl

@@ -132,7 +132,7 @@ end
 bind(b, "command", cb)
 tcl(b, "invoke")
 @assert ctr == 2
-img = Image(Pkg.dir("Tk", "examples", "weather-overcast.gif"))
+img = Image(joinpath(dirname(@__FILE__), "..", "examples", "weather-overcast.gif"))
 map(u-> configure(u, image=img, compound="left"), (l,b))
 destroy(w)