Fix Travis build

Author: ScottPJones

.travis.yml

@@ -20,7 +20,7 @@ git:
 # uncomment the following lines to override the default test script
 script:
   - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-  - julia -e 'Pkg.clone("https://github.com/JuliaString/Strs.jl.git") ; Pkg.clone("https://github.com/JuliaString/Format.jl.git"); Pkg.clone("https://github.com/JuliaString/StrLiterals.jl.git"); Pkg.clone(pwd()); Pkg.test("StrFormat"); coverage=true)'
+  - julia -e 'p="https://github.com/JuliaString"; s=".jl.git"; Pkg.clone("$p/Strs$s") ; Pkg.clone("$p/Format$s"); Pkg.clone("$p/StrLiterals$s"); Pkg.clone(pwd()); Pkg.test("StrFormat"; coverage=true)'
 after_success:
   # push coverage results to Coveralls
   - julia -e 'cd(Pkg.dir("StrFormat")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'