Authenticate CI with DevHub (#49)

* Authenticate CI DevHub using Travis repository settings
* Authenticate CI DevHub using AppVeyor settings

@W-4092809@

* Document how key should be stored

.appveyor.yml

@@ -24,6 +24,11 @@ install:
   - SET PATH=%APPVEYOR_BUILD_FOLDER%\sfdx\bin;%PATH%
   - sfdx update
   - npm install -g codecov 
+  # the JWT key should be stored base 64 encoded in AppVeyor settings
+  - ps: "[System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String($env:SFDX_CI_DEVHUB_JWTKEY)) | Out-File -Encoding \"ASCII\" devhub.key"
+  - sfdx force:auth:jwt:grant --clientid %SFDX_CI_DEVHUB_CLIENTID% --username %SFDX_CI_DEVHUB_USERNAME% --jwtkeyfile devhub.key --setdefaultdevhubusername --setalias devhub
+  - del devhub.key
+
 
 build_script:
   - npm run compile

.gitignore

@@ -75,3 +75,6 @@ jspm_packages/
 
 # Eclipse
 .project
+
+# no keys
+*.key

.travis.yml

@@ -49,6 +49,12 @@ before_install:
       sudo installer -pkg sfdx-osx.pkg -target /
       sfdx update
     fi
+  - |
+    # the key should be stored in Travis Repository Setting, wrapped in quotes and newlines replaced with \n
+    echo -e $SFDX_CI_DEVHUB_JWTKEY > devhub.key
+    sfdx force:auth:jwt:grant --clientid $SFDX_CI_DEVHUB_CLIENTID --username $SFDX_CI_DEVHUB_USERNAME --jwtkeyfile devhub.key --setdefaultdevhubusername --setalias devhub
+    rm devhub.key
+
 
 install:
   - npm install