Update documentation to reflect addition of json formatting

Author: mariuszskon

MANUAL.md

@@ -18,6 +18,8 @@ Possible output levels:
 Other options:
 ```
   -h, --help            show help message and exit
+  -f {csv,json}, --format {csv,json}
+                        output format (default: csv)
   -x, --extract         autoextract compressed files
   -s SKIPS, --skips SKIPS
                         comma-separated list of checkers to disable
@@ -144,6 +146,9 @@ Options:
 
 This option allows the CVE Binary Tool to extract compressed files into a temporary directory so the contents can be scanned.  If the quiet flag is not used, the list of extracted files will be printed.
 
+### -f {csv,json}, --format {csv,json}
+This options controls the format of the final output produced by the CVE Binary Tool. This can be useful if you have particular output requirements, for example, if you already have a separate reporting tool that only takes JSON.
+
 ### -s SKIPS, --skips SKIPS
 
 This option allows one to skip (disable) a comma-separated list of checkers.  This can be useful for improving the performance of the tool when you have some prior knowledge about what checkers may apply to the binary you are scanning.  

README.md

@@ -31,6 +31,8 @@ You can also do `python -m cve_bin_tool.cli <flags> <path to directory>` which i
                         log level. The default log level is info
 
   Functional options:
+  -f {csv,json}, --format {csv,json}
+                        output format (default: csv)
   -x, --extract         autoextract compressed files
   -s SKIPS, --skips SKIPS
                         comma-separated list of checkers to disable