[TrivialPatches] Typos in README.md, fix and update CI, update projects list... (#840)

* update Example in README.md (#769)

* specify the color as the required arg (#777)

* command: fix typo in docstring of InheritedFlags (#779)

* add istio to the list of projects built with Cobra (#786)

* remove redundant 'else' (#806)

* add mattermost-server as a project built with Cobra (#824)

* update README.md (#826)

Fix the comment: consistent with others

* add uber/prototool as a project built with Cobra (#831)

* fix(ci): use go vet, update to Go 1.12, update shellcheck to v0.4.6 (#832)

* add go.mod and go.sum (#833)

* chore(travis): move 'diff' job to separate stage in Travis (#839)

* chore(travis): use language configuration list instead of explicit entries in matrix.include (#839)

* chore(travis): update shellcheck-docker to v0.6.0 (#839)

* update(README.md): separate projects by commas, instead of using a list

* chore: update viper to v1.3.2 and go-md2man to v1.0.10

* fix: convert CRLF to LF when comparing files

* use kyoh86/richgo to provide colored test outputs

.circleci/config.yml

@@ -15,13 +15,13 @@ references:
         PATH=$PATH:$PWD/bin go test -v ./...
         go build
         if [ -z $NOVET ]; then
-          diff -u <(echo -n) <(go tool vet . 2>&1 | grep -vE 'ExampleCommand|bash_completions.*Fprint');
+          diff -u <(echo -n) <(go vet . 2>&1 | grep -vE 'ExampleCommand|bash_completions.*Fprint');
         fi
 
 jobs:
   go-current:
     docker:
-      - image: circleci/golang:1.11
+      - image: circleci/golang:1.12
     working_directory: *workspace
     steps:
       - checkout
@@ -31,7 +31,7 @@ jobs:
           command: diff -u <(echo -n) <(gofmt -d -s .)
   go-previous:
     docker:
-      - image: circleci/golang:1.10
+      - image: circleci/golang:1.11
     working_directory: *workspace
     steps:
       - checkout