I've tried everything what I understood in my short knowladge of Programming.
When I enter "bundler install" I get "Certificate Verify Failed" (I've checked the certificate, it's updated) Then it ends up with "Make sure "gem install [gem's name] -v [version] succeds before bundling."
So I decided to install Gem-per-Gem, instead of trying to solve they certificate issue.
Will this work or I'm just wasting my time?
Found it!
https://gist.github.com/luislavena/f064211759ee0f806c88
Most importantly...download https://raw.githubusercontent.com/rubygems/rubygems/master/lib/rubygems/ssl_certs/AddTrustExternalCARoot-2048.pem
Figure out where to stick it
C:\>gem which rubygems C:/Ruby21/lib/ruby/2.1.0/rubygems.rb Then just copy the .pem file in ../2.1.0/rubygems/ssl_certs/ and go on about your business.
NOTE The above link is currently down as of 10/12/2016. Commentary led me to do some follow-up research and it appears to be a continuing problem and is not being directly discussed. There are other topics directly on the rubygems KB you may want to follow --> http://help.rubygems.org/search?utf8=%E2%9C%93&q=SSL+Certs&t=d&scope=all&category_id=&recommend=1
.txt, be sure to change this back to just .pem.
Try replacing 'https://rubygems.org' with http://rubygems.org in the GemFile
