Fixing codecov tool

.travis.yml

@@ -29,6 +29,6 @@ after_success: |
   make install DESTDIR=../../kcov-build &&
   cd ../.. &&
   rm -rf kcov-master &&
-  for file in target/debug/examplerust-*; do [ -x "${file}" ] || continue; mkdir -p "target/cov/$(basename $file)"; ./kcov-build/usr/local/bin/kcov --exclude-pattern=/.cargo,/usr/lib --verify "target/cov/$(basename $file)" "$file"; done &&
+  for file in target/debug/rgb-*; do [ -x "${file}" ] || continue; mkdir -p "target/cov/$(basename $file)"; ./kcov-build/usr/local/bin/kcov --exclude-pattern=/.cargo,/usr/lib --verify "target/cov/$(basename $file)" "$file"; done &&
   bash <(curl -s https://codecov.io/bash) &&
   echo "Uploaded code coverage"