Add note about deploying dev environment to Heroku
Add note about deploying dev environment to Heroku

nilamkhedkar1/symfony_demo,jzawadzki/symfony-demo,samitiana/symfony-demo,javiereguiluz/symfony-demo,Codeception/symfony-demo,jzawadzki/symfony-demo,dzuelke/symfony-demo,Codeception/symfony-demo,javiereguiluz/symfony-demo,yodur2potassium/test-behat-selenium-symfo,healthefrog/symfony-demo,healthefrog/symfony-demo,javiereguiluz/symfony-demo,TomasVotruba/symfony-demo,bocharsky-bw/symfony-demo,voronkovich/symfony-demo,healthefrog/symfony-demo,bocharsky-bw/symfony-demo,TomasVotruba/symfony-demo,voronkovich/symfony-demo,vakstk50/jenkinstest,maidmaid/symfony-demo,bocharsky-bw/symfony-demo,Codeception/symfony-demo,yceruto/symfony-demo,voronkovich/symfony-demo,maidmaid/symfony-demo,yceruto/symfony-demo,maidmaid/symfony-demo,symfony/symfony-demo,yodur2potassium/test-behat-selenium-symfo,samitiana/symfony-demo,symfony/symfony-demo,nilamkhedkar1/symfony_demo,nilamkhedkar1/symfony_demo,yodur2potassium/test-behat-selenium-symfo,TomasVotruba/symfony-demo,dzuelke/symfony-demo,vakstk50/jenkinstest,samitiana/symfony-demo,dzuelke/symfony-demo,yceruto/symfony-demo,symfony/symfony-demo,vakstk50/jenkinstest,jzawadzki/symfony-demo