bug: Fix copyTo
Merge pull request #10 from martflu/copy-fix

bug: Fix copyTo
bug: Do not add empty content-range header

It will be formatted incorrectly (0--1/0)
feat: Implemented uploadObjectSimple and uploadObjectMultipart in MockConnection
Added isNotEmpty property to contentRange
test: all tests passing
Merge branch 'master' of github.com:ovangle/google_cloud_storage
chore: Bump version number (0.4.0-pre2)

Added @martflu as contributor
feat: Added constructors to ObjectAccessControls
feat: Support for defaultObjectAcl metadata property
chore: Bump version number (0.4.0)
feat: Added 'downloadUrl' getter to RemoteFile
chore: Bumped version (0.4.1-pre1)
bug: Need to urlencode object parameter