Merge pull request #12 from throrin19/release-0.4.0

fix bug
+ fix bug on set id/name from id attr of element
Merge remote-tracking branch 'origin/development' into development
+ add findById in Svg and Group classes
+ id for text if it has just value.
@ fix bug
@ fix function name
Merge pull request #14 from throrin19/release-0.4.1

Release 0.4.1