v1.0.1

dbparser 1.0.1

• Fix CRAN Note
• Improve documentation
• Refactor unused functions
• Remove Count features from drug data set
• Fix serveral typoes in documentation and code
• Fix consistency issue of CLASS of Data Frames Returned by dbparser
• Check if drugbank database exist before parsing
• Add support for international_brands and salts elements
• Properly rename some features to have clear names
• Reduce datasets size by getting unique rows only
• Support reading zip file containing DrugBank xml database