take display_zero setting into consideration for shipping_amount total
adjust default totals (e.g. discount) feed according to other lines
adjust default totals (e.g. discount) alignment according to other lines
Undefined Variable Bugfix
Merge pull request #62 from sprankhub/development

Undefined Variable Bugfix
Merge pull request #57 from NetresearchAppFactory/development

Minor fixes in totals display
Completed readme file
Merge pull request #64 from sprankhub/readme

Completed readme file
Removed useless test function
Merge pull request #65 from sprankhub/refactoring

Removed useless test function
fixed test refactoring
Merge pull request #66 from sprankhub/fix

fixed test refactoring
#52: small refactoring insertHeader
Merge pull request #67 from avogt/development

#52: small refactoring insertHeader
Merge branch 'development'