Temporarily disable rustfmt

- Issue with tests and modules causes rustfmt to fail (rust-lang/rustfmt#3794)
- Will re-organize tests in 0.3 branch to fix.  Don't want to do it here to avoid merge conflicts.

Author: jeikabu

.travis.yml

@@ -38,7 +38,7 @@ before_script:
 
 script:
   # Check source code formatting
-  - cargo fmt --all -- --check
+  #- cargo fmt --all -- --check
   #- cargo clippy
   # Build everything (including optional packages)
   - cargo build --all --all-targets