solving problem of compilation on ProviderContext's class
using get or default in Map to get the code more cleaner
removing manual add all
update the code using lambda
removing manual add all
removing unnused imports
Merge pull request #20 from otaviojava/provider_problem

solving problem of compilation on ProviderContext's class
Merge pull request #21 from otaviojava/abstractcontext_get_default

using get or default in Map to get the code more cleaner
Merge pull request #22 from otaviojava/manual_add_all

removing manual add all
Merge pull request #23 from otaviojava/lamdba

Using lambda resources