add parse_config_from_environment

[bretello]

• add wob_parse_config_from_environment to parse configuration values from environment variables
• add systemd units examples (wob.service reads configuration from environment from ~/.config/wob.conf)
• use #RRGGBBAA syntax for colors instead of #AARRGGBBB (Change color format from #argb to #rgba #70)

I guess this will also requires patching the PKGBUILD in the archlinux's community repos to install the systemd units

[bretello]

I'm guessing this also relates to #61

[francma]

add wob_parse_config_from_environment to parse configuration values from environment variables

There is already an issue regarding .ini file configuration #66. Parsing config from environment variables will get pretty messy once per output configuration is implemented (that also applies for cli options).

add systemd units examples (wob.service reads configuration from environment from ~/.config/wob.conf)

Looks good, please make a separate PR.

use #RRGGBBAA syntax for colors instead of #AARRGGBBB (#70)

Looks good, please make a separate PR.

[bretello]

There is already an issue regarding .ini file configuration #66. Parsing config from environment variables will get pretty messy once per output configuration is implemented (that also applies for cli options).

Is there an active branch for this?

[francma]

Systemd service examples and changed color format are already merged in master.

Parsing from configuration files (which replaces this PR) is still work in progress in #78