I followed steps expressed in Chapter 1 for producing StockDog and complied sub steps of each step too.but by the end of step 2 a plus sign must be appeared in the main page of application furthermore buttons with blue background must be displayed(about ,Home and Contact)
but this is what appeared :
https://s16.postimg.org/8g8ckin6t/Stock_Dog.png
obviously differencing in buttons relates to differencing in bootstrap settings and does not lead to the main problem
why in my case + sign does not appear?
Hint following is appeared as console errors :
Error: [$injector:modulerr] Failed to instantiate module stockDogApp due to:
[$injector:modulerr] Failed to instantiate module mgcrea.ngStrap due to:
[$injector:nomod] Module 'mgcrea.ngStrap' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.
http://errors.angularjs.org/1.5.8/$injector/nomod?p0=mgcrea.ngStrap
minErr/<@http://localhost:9000/bower_components/angular/angular.js:68:12
module/<@http://localhost:9000/bower_components/angular/angular.js:2082:17
ensure@http://localhost:9000/bower_c...lar/angular.js:2006:38
module@http://localhost:9000/bower_c...lar/angular.js:2080:14
loadModules/<@http://localhost:9000/bower_components/angular/angular.js:4617:22
forEach@http://localhost:9000/bower_...lar/angular.js:321:11
loadModules@http://localhost:9000/bo...lar/angular.js:4601:5
loadModules/<@http://localhost:9000/bower_compone
I don't know what really have to do pleas help

just you should comply with this
https://github.com/mgcrea/angular-strap
note that ,as though, you can't trust to package manager 100 percent.