Update row.rb

Fixed a little typo.
Fix minor typo
Merge pull request #223 from totallymike/master

Fix a little typo.
Update README.md
Fix minor typos
Fix minor typos
Merge branch 'patch-1' of https://github.com/Fapper/axlsx into patch-1
Don't mutate the object passed into Color#rgb=
remove support for 1.8.7
merge
Merge pull request #227 from misfo/color-rgb-setter-mutates-its-argument

Color#rgb= mutates its argument
Merge pull request #226 from Fapper/patch-1

Correct minor typos
Merge pull request #224 from Niggler/patch-1

Update README.md
Merge pull request #174 from IndependentIP/master

Fix hardcoded sheet name in PivotTableCacheDefinition and allow other sheet to be the data source for the pivot table
ensure that values are camelized for serialized attributes
removed unused schema variable declaration
fixed specs for sheet view to ensure camelized serialization
safe to camel all values
updated image source validation to use lower case comparison of accepted file extensions
remove debug code from test