Publish version 0.2.1.X (#18)

- fix pester test execution order in vscode test task.
- fix coveralls.io link in bagde.
- skip coverage report creation for PR triggered builds
- update docs
- Connection type SCP added for `Connect-To` and `Disconnect-From`.

## Internal Changes
- pester tests now don't need to dotsource other public functions from the same module (fixes #17 )
  - helper and private functions stilll needs to be dotsourced.
- basic module tests added
- pester tests for `Resolve-Dependency` added
- Wrapper function  `Get-ModuleBase` added. This enables mocking in tests.

tests/00_BasicModule.Tests.ps1

@@ -0,0 +1,15 @@
+$RepoRoot = (Get-GitDirectory).replace('\.git', '')
+
+Describe "Pre-Flight module tests" {
+    $ManifestFilePath = "{0}\src\PSCredentialstore.psd1" -f $RepoRoot
+    Context "Manifest file related" {
+        It "Test the parsed file itsef" {
+            { Test-ModuleManifest -Path $ManifestFilePath } | Should -Not -Throw
+        }
+    }
+    Context "Module consistency tests" {
+        IT "Importing should work" {
+            { Import-Module -Name $ManifestFilePath -Global -Force }| Should -Not -Throw
+        }
+    }
+}