Fixed bug in example JSON file

[BaronVonPerko]

The example in the readme file fails due to an extra comma.

[codecov-io]

Codecov Report

Merging #1115 (8cb957a) into master (c7af74f) will increase coverage by 82.09%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #1115       +/-   ##
===========================================
+ Coverage        0   82.09%   +82.09%     
===========================================
  Files           0      170      +170     
  Lines           0     2072     +2072     
  Branches        0      247      +247     
===========================================
+ Hits            0     1701     +1701     
- Misses          0      276      +276     
- Partials        0       95       +95     

Impacted Files	Coverage Δ
...src/lib/slider/dynamic-primeng-slider.component.ts	100.00% <0.00%> (ø)
...heckbox/dynamic-ng-bootstrap-checkbox.component.ts	100.00% <0.00%> (ø)
...b/form-array/dynamic-ionic-form-array.component.ts	11.11% <0.00%> (ø)
...opdownlist/dynamic-kendo-dropdownlist.component.ts	100.00% <0.00%> (ø)
.../core/src/lib/model/select/dynamic-select.model.ts	80.00% <0.00%> (ø)
.../src/lib/service/dynamic-form-component.service.ts	72.41% <0.00%> (ø)
.../dynamic-basic-form-control-container.component.ts	95.83% <0.00%> (ø)
...c/lib/select/dynamic-bootstrap-select.component.ts	100.00% <0.00%> (ø)
...lib/calendar/dynamic-primeng-calendar.component.ts	72.72% <0.00%> (ø)
...dio-group/dynamic-primeng-radio-group.component.ts	100.00% <0.00%> (ø)
... and 160 more

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[matheo]

Hi @BaronVonPerko
Do you mind to share your experience with dynamic forms
in the discussions of a new library to implement advanced features?
https://dev.to/myndpm/a-new-approach-to-have-dynamic-forms-in-angular-5d11
Thanks in advance!