Add 'type' to license so nuget pack doesn't fail. (#99)

Author: StephenMolloy

src/packages/ConfigurationBuilders.Azure.nupkg/Microsoft.Configuration.ConfigurationBuilders.Azure.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders Azure</tags>
 

src/packages/ConfigurationBuilders.AzureAppConfiguration.nupkg/Microsoft.Configuration.ConfigurationBuilders.AzureAppConfiguration.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders AzureAppConfiguration</tags>
 

src/packages/ConfigurationBuilders.Base.nupkg/Microsoft.Configuration.ConfigurationBuilders.Base.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders</tags>
   </metadata>

src/packages/ConfigurationBuilders.Environment.nupkg/Microsoft.Configuration.ConfigurationBuilders.Environment.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders - Environment</tags>
 

src/packages/ConfigurationBuilders.Json.nupkg/Microsoft.Configuration.ConfigurationBuilders.Json.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders Json</tags>
 

src/packages/ConfigurationBuilders.KeyPerFile.nupkg/Microsoft.Configuration.ConfigurationBuilders.KeyPerFile.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders - KeyPerFile</tags>
 

src/packages/ConfigurationBuilders.UserSecrets.nupkg/Microsoft.Configuration.ConfigurationBuilders.UserSecrets.nuspec

@@ -13,7 +13,7 @@
     <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <iconUrl>http://go.microsoft.com/fwlink/?LinkID=288859</iconUrl>
     <licenseUrl>https://licenses.nuget.org/MIT</licenseUrl>
-    <license>MIT</license>
+    <license type="expression">MIT</license>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders</tags>