Add Arr::sum()
Updated image save docs for filename which is now optional

Signed-off-by: Derek Myers <arcticpro@gmail.com>
Merge pull request #538 from dmyers/feature/image-save

Updated image save docs for filename which is now optional
documented protocol based routing to verb based routes
documented ORM from_cache() method
documented new --file switch to run tests in a specific file
documented through-table ordering. related fuel/orm#235
Update dbutil.html
Merge pull request #539 from Art4/patch-1

Update dbutil.html
Update view.html

Fixed small typo.
Merge pull request #540 from quetzyg/patch-2

Update view.html
Merge pull request #537 from hackoh/1.6/add_arr_sum

Add Arr::sum()
added VENDORPATH
Update event.html
Merge pull request #541 from Belial-AS/patch-1

Update event.html
documented the data_type "decimal[:digit]" for Observer_Typing
add example of oil test --log-junit option to docs. about #186
Merge pull request #542 from takyam-git/feature/oil/test/junit

add example of oil test --log-junit option to docs. about fuel/oil#186