Apply fixes from StyleCI

[zingimmick]

This pull request applies code style fixes from an analysis carried out by StyleCI.

---

For more information, click here.

[codecov]

Codecov Report

Merging #44 into 2.x will not change coverage.
The diff coverage is 80.00%.

@@            Coverage Diff            @@
##                2.x      #44   +/-   ##
=========================================
  Coverage     90.50%   90.50%           
  Complexity       64       64           
=========================================
  Files            16       16           
  Lines           179      179           
=========================================
  Hits            162      162           
  Misses           17       17           

Impacted Files	Coverage Δ	Complexity Δ
src/Commands/SmsSwitchConnectionCommand.php	51.42% <66.66%> (ø)	13.00 <0.00> (ø)
src/SmsServiceProvider.php	100.00% <100.00%> (ø)	5.00 <0.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4987bcc...7b566fc. Read the comment docs.