Adopted improvements from BME280 library

Adopted some of the improvements from the BME280 library. Thanks @jraber.

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip3 install adafruit-circuitpython-bmp280.

Read the docs for info on how to use it.

Update Travis Badge In Readme

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip3 install adafruit-circuitpython-bmp280.

Read the docs for info on how to use it.

Update README with PyPI instructions

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

To use in CPython, pip3 install adafruit-circuitpython-bmp280.

Read the docs for info on how to use it.

Fixes.

Fixes requirements.txt and sets the pylint version to 1.9.2.

To use in CircuitPython, simply install the Adafruit CircuitPython bundle.

Read the docs for info on how to use it.

To install from PyPI on a Linux system, use:

sudo pip3 install adafruit-circuitpython-bmp280

3.0.7: Tweak .travis.yml GitHub release

To use in CircuitPython, download the .zip file and copy its contents to the lib folder on the CIRCUITPY drive. Or, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Addafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/bmp280/en/latest/) for info on how to use it.

To install from PyPI on a Linux system, use:

```sh
sudo pip3 install adafruit-circuitpython-bmp280
```

Fix exceptional exception

• Fix crash when raising chip id error. Thanks to @dhalbert !

To use in CircuitPython, download the .zip file and copy its contents to the lib folder on the CIRCUITPY drive. Or, simply install the Adafruit CircuitPython bundle.

Read the docs for info on how to use it.

Improved reference documentation.

Thanks to @sommersoft for the great work!

Fix Travis YML typo

Re-bundling so we use the right travis tools

Updated with lint and autobundling!

@tannewt linted and updated travis for auto-genning mpy + bundling

note updated seaLevelhPa member variable to sea_level_pressure - check examples for new demo!

To use in CircuitPython, simply install the Adafruit CircuitPython bundle or the zip from here that matches the version of CircuitPython you are using.

2.0 Release for CircuitPython 2.x

2.0 Release with binaries for CircuitPython 2.x (note this might not work with CircuitPython 3.0+!).