Merge pull request #16 from jwoodcock/master

Checks for active virtualenv and virtphp session.
Added known issue for .pearrc error on environment creation
Fixed formatting
Merge pull request #23 from jakerella/pearrc-issue-doc

.pearrc missing issue documentation
Update README.md

fixed typo
Merge pull request #26 from elexx/patch-1

Update README.md
use symfony filesystem->exists instead of 'file'

fixes #25
use symfony fs instead of find - quickfix
Merge pull request #27 from elexx/find-timeout-fix

use symfony filesystem->exists instead of 'find'
Merge pull request #20 from jwoodcock/list-environments

Functionality for show command
Adding a changelog to the project
Added phpbrew to the list of PHP version tools

[ci skip]
corrected some DocBlocks with incorrect throw classes.
Updated to PSR-2 standard on entire project.
Converted any remaining tabs to spaces; moved all concatenation '.' to the end of the line instead of the beginning.
Updated all double quotes not used for interpolation to single quotes.
fixed create command file
Updated the concatenation to lead with the operator.
Merge pull request #30 from pddevins/PSR-2-review-complete

PSR-2 review complete
Merge remote-tracking branch 'upstream/master'