Add crt-static to rustflags to remove need for VC++ runtime for Windows

users

README.md

@@ -12,7 +12,6 @@ interface or as a library in other Rust programs.
 ## Installing
 
 Oxipng can be downloaded from the [Releases](https://github.com/shssoichiro/oxipng/releases) link on the GitHub page.
-Windows users will need to ensure they have the [Visual C++ 2015 Runtime](https://www.microsoft.com/en-us/download/details.aspx?id=48145) installed.
 
 Oxipng can also be installed from Cargo, via the following command:
 ```
@@ -74,6 +73,7 @@ passing it, along with an input filename, into the
 
 Oxipng began as a complete rewrite of the OptiPNG project,
 which was assumed to be dead as no commit had been made to it since March 2014.
+(OptiPNG has since released a new version, after Oxipng was first released.)
 The name has been changed to avoid confusion and potential legal issues.
 
 The core goal of rewriting OptiPNG was to implement multithreading,

appveyor.yml

@@ -30,6 +30,7 @@ test_script:
 
 before_deploy:
   # Generate artifacts for release
+  - SET RUSTFLAGS=-C target-feature=+crt-static
   - cargo build --release
   - mkdir staging
   - copy target\release\oxipng.exe staging
@@ -54,8 +55,8 @@ deploy:
     # channel to use to produce the release artifacts
     # NOTE make sure you only release *once* per target
     CHANNEL: stable
-    appveyor_repo_tag: true
+#    appveyor_repo_tag: true
 
-branches:
-  only:
-    - master
+#branches:
+#  only:
+#    - master