update travis yaml to accept failures on older julia versions

Author: dysonance

.travis.yml

@@ -4,14 +4,16 @@ os:
   - linux
 julia:
   - 0.6
+  - 1.0
   - nightly
 matrix:
     allow_failures:
+        - julia: 0.6
         - julia: nightly
 notifications:
     email: false
 after_success:
   # push coverage results to Coveralls
-  - julia -e 'cd(Pkg.dir("Indicators")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
+  - julia -e 'using Pkg; cd(Pkg.dir("Indicators")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
   # push coverage results to Codecov
-  - julia -e 'cd(Pkg.dir("Indicators")); Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'
+  - julia -e 'using Pkg; cd(Pkg.dir("Indicators")); Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'