Bring back files from vendor directory that we accidentally excluded

vendor/github.com/gdamore/encoding/.appveyor.yml

@@ -0,0 +1,13 @@
+version: 1.0.{build}
+clone_folder: c:\gopath\src\github.com\gdamore\encoding
+environment:
+  GOPATH: c:\gopath
+build_script:
+- go version
+- go env
+- SET PATH=%LOCALAPPDATA%\atom\bin;%GOPATH%\bin;%PATH%
+- go get -t ./...
+- go build
+- go install ./...
+test_script:
+- go test ./...

vendor/github.com/gdamore/tcell/v2/.appveyor.yml

@@ -0,0 +1,13 @@
+version: 1.0.{build}
+clone_folder: c:\gopath\src\github.com\gdamore\tcell
+environment:
+  GOPATH: c:\gopath
+build_script:
+- go version
+- go env
+- SET PATH=%LOCALAPPDATA%\atom\bin;%GOPATH%\bin;%PATH%
+- go get -t ./...
+- go build
+- go install ./...
+test_script:
+- go test ./...

vendor/github.com/gdamore/tcell/v2/.travis.yml

@@ -0,0 +1,18 @@
+language: go
+
+go:
+  - 1.15.x
+  - master
+
+arch:
+   - amd64
+   - ppc64le
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - go test -race -coverprofile=coverage.txt -covermode=atomic
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)