feature save or update functionality implemented
list of features now can be saved or updated
removed getSerializedObject function form Feature class
Merge pull request #2 from plexonic/feature-save-or-update

feature save or update functionality implemented
some refactoring
created builder for Saltr instance
Merge pull request #3 from plexonic/saltr-builder

Saltr builder
repository fixing
igp implementation. not finished
Fixed the bug that was causing multiple level json loading.
Merge pull request #5 from plexonic/dev

merging dev branch into master