get rid of the camelCase

[jordansread]

use_the_underscores.

At a minimum for all of the public functions.

[lindsayplatt]

Just did a regex search through all of our files [a-z][A-Z]. Here's what functions are still camel case (all internal):

• ~get_axTicks, usr_axTicks, grid_axTicks~ (probably OK because axTicks is base function)
• appendLegendColumnInfo
• appendLegendPositionConfiguration
• append_keepTZ

[ldecicco-USGS]

Yeah, I'd vote keep axTick as is, otherwise I'm pretty indifferent with a slight preference to switch for consistency.

[lindsayplatt]

We've got a lot of camel case in variable names and in examples. Not worth changing in my opinion, so I am closing this. Someone can reopen if they feel otherwise.