Only submit coverage and build docs on Julia 0.7

Author: ararslan

.travis.yml

@@ -12,5 +12,5 @@ notifications:
 #  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
 #  - julia -e 'Pkg.clone(pwd()); Pkg.build("AbstractFFTs"); Pkg.test("AbstractFFTs"; coverage=true)'
 after_success:
-  - julia -e 'Pkg.add("Coverage"); cd(Pkg.dir("AbstractFFTs")); using Coverage; Coveralls.submit(Coveralls.process_folder())'
-  - julia -e 'Pkg.add("Documenter"); cd(Pkg.dir("AbstractFFTs")); include(joinpath("docs", "make.jl"))'
+  - julia -e 'VERSION >= v"0.7-" && (Pkg.add("Coverage"); cd(Pkg.dir("AbstractFFTs")); using Coverage; Coveralls.submit(Coveralls.process_folder()))'
+  - julia -e 'VERSION >= v"0.7-" && (Pkg.add("Documenter"); cd(Pkg.dir("AbstractFFTs")); include(joinpath("docs", "make.jl")))'