Fix typo.
Should read 'will have its own'.
Spree Pro *will* then route.
Update navigating.md guide to Spree 2.0.0

Fixes #102
[core/taxation] Replace pound character with HTML entity
Restore checkout customization link
Instructions for edge deploy
Use master branch for edge now
Straight Quotes, Not Smart Quotes. h/t to @johanb for reporting
Initial outline for User Guide.
Fix compilation error
Fix Developer guides title style
Add spree conf popup
Overview/Dashboard user documentation.
Merge branch 'master' of github.com:spree/spree-guides
Images for overview user documentation
Filtering orders user guide and images.
Removed a trailing )
Minor punctuation changes and name correction on ImageMagick
Minor punctuation/capitalization changes for consistency.