Play your CARDs right

Databases:

• update to CARD 2.0
• updated NCBI, Resfinder and VFDB
• remove NCBI-Betalactamase (now part of NCBI)

Features:

• added PRODUCT column
• updated docs
• better --help output

Bug fixes:

• ensured BLAST installed for --setupdb
• proper error codes for --help etc
• --summary honours --csv now

Dev:

• TRAVIS support