0.4.2 release
fix #19 Address 0x45 (#20) - fix #19 SHT85 cannot be address 0x45 - rewrote begin() - removed example SHT85_duo - add example SHT85_multiplex - add section about multiple SHT85 to readme.md - redo badges in readme.md - minor edits
fix #19 Address 0x45 (#20) - fix #19 SHT85 cannot be address 0x45 - rewrote begin() - removed example SHT85_duo - add example SHT85_multiplex - add section about multiple SHT85 to readme.md - redo badges in readme.md - minor edits