fix reference to spray
fix typos in raster doc page
fix typos in RasterSource section
fix typos in Execution Engine Server sections
fix misspelled/misplaced anchor link

in OperationResults section, referring to Operation Flow Example section
fix its and semicolon typo in Operation Flow Example
fix sentence structure in Reading and Writing Data index
fix capitalization and naming
remove stray VERSION 1
fix small typos
fix unary minus typo
fix typo and add monospace font
fix typos
fix typos and make example more clear
fix 404'ing section link
add small grammar change
fix typos and use 'we'
make argument order more clear
fix references to Catalog page that put an extra 'the' when compiled
Merge pull request #30 from andrewbt/topic/0-9-0-documentation-edits

Documentation edits for clarity, grammar, and typos