Fix unexcept error for the config (#16)

* fix: not except error echo for the config not exist

* docs: update the md styles

CODE_OF_CONDUCT.md → CODEOFCONDUCT.md

@@ -1,4 +1,3 @@
-
 # Contributor Covenant Code of Conduct
 
 ## Our Pledge
@@ -61,7 +60,7 @@ representative at an online or offline event.
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
 reported to the community leaders responsible for enforcement at
-[INSERT CONTACT METHOD].
+[[email protected]].
 All complaints will be reviewed and investigated promptly and fairly.
 
 All community leaders are obligated to respect the privacy and security of the

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Contributing
 
-By participating to this project, you agree to abide our [code of conduct](/CODE_OF_CONDUCT.md).
+By participating to this project, you agree to abide our [code of conduct](/CODEOFCONDUCT.md).
 
 ## Setup your machine
 
@@ -71,4 +71,3 @@ Thank you to all our backers! [[Become a backer](https://opencollective.com/salt
 ### Sponsors
 
 Thank you to all our sponsors! (please ask your company to also support this open source project by [becoming a sponsor](https://opencollective.com/saltbo#sponsor))
-

README.md

@@ -24,14 +24,14 @@ English | [🇨🇳中文](https://saltbo.cn/uptoc)
 
 **homebrew tap**:
 
-```console
-$ brew install saltbo/bin/uptoc
+```bash
+brew install saltbo/bin/uptoc
 ```
 
 **homebrew** (may not be the latest version):
 
-```console
-$ brew install uptoc
+```bash
+brew install uptoc
 ```
 
 **deb/rpm**:
@@ -41,17 +41,15 @@ install with `dpkg -i` and `rpm -i` respectively.
 
 **Shell script**:
 
-```console
-$ curl -sSf https://static.saltbo.cn/github.com/uptoc/install.sh | sh
+```bash
+curl -sSf https://static.saltbo.cn/github.com/uptoc/install.sh | sh
 ```
 
 **manually**:
 
 Download the pre-compiled binaries from the [releases page](https://github.com/saltbo/uptoc/releases) and
 copy to the desired location.
 
-
-
 ## Usage
 
 ### Basic

config/config.go

@@ -59,7 +59,7 @@ func ParseFromRC() (*Config, error) {
 	}
 
 	rcPath := filepath.Join(homeDir, ".uptocrc")
-	f, err := os.OpenFile(rcPath, os.O_CREATE|os.O_RDWR, 0644)
+	f, err := os.OpenFile(rcPath, os.O_RDWR, 0644)
 	if os.IsNotExist(err) {
 		return nil, fmt.Errorf("please setup your config by run `uptoc config`")
 	} else if err != nil {
@@ -69,7 +69,7 @@ func ParseFromRC() (*Config, error) {
 	c := &Config{f: f}
 	yd := yaml.NewDecoder(f)
 	if err := yd.Decode(c); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("decode config failed: %s", err)
 	}
 
 	if strings.HasPrefix(c.Core.SaveRoot, "/") {